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  • 1  Epidemiological trends of rabies and control strategy in China: A narrative review
    Lixuan Zhao Yao Xia André Kiesel Yifan Li Conghui Liao Jianyun Lu Jiahai Lu
    2023(3):1-9. DOI: 10.4103/2773-0344.363563
    [Abstract](608) [HTML](0) [PDF 734.41 K](1633)
    Abstract:
    Rabies is widely prevalent worldwide, and China is among the countries most affected. To achieve the goal of zero human deaths from dog-mediated rabies by 2030, dog management and immunization must be improved and comprehensive prevention and control measures must be adopted. We analyze the epidemiological profile of rabies in China in the past 30 years to clarify the origins of China’s high prevalence, and propose a comprehensive rabies prevention and control concept based on “One Health” by drawing on successful international control efforts.Results: The Omicron variants had the characteristics of high insidiousness, rapid transmission, high infectivity, and short incubation period, which were consistent with the characteristics of outbreaks caused by Omicron in other regions in China and abroad. There were 568 978 asymptomatic infections in Shanghai from Feburary 26 to June 30, 2022, accounting for 90.73% of the SARS-CoV-2 infections in this outbreak wave. It’s significantly different from a total of 23 277 SARS-CoV-2 infections in China between March 31, 2020 and August 8, 2021, of which 41.97% of the cases were asymptomatic infections. Conclusions: Compared with previous outbreaks emerged in China, the Omicron outbreak in Shanghai was characterized by multiple point dissemination, wide coverage, a large number of close contacts of confirmed infections and asymptomatic carriers, and difficult source tracing. The lessons from Shanghai’s response to Omicron showed that the dynamic zero-COVID policy is still the most suitable response to the virus which can quickly find the infections and curb the transmission route.
    2  Anti-onchocercal properties of three medicinal plants against Onchocerca ochengi
    Moses Samje Paulin Ngoufo Napoleon Mfonku Brice Tchoufack Glory Mbah Eduard Tiku Fidelis Cho-Ngwa
    2025(3):139-146. DOI: 10.4103/ohbl.ohbl_43_24
    [Abstract](552) [HTML](0) [PDF 582.19 K](1466)
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    Objective: To evaluate the filaricidal properties of three indigenous medicinal plants—Cassia alata, Zornia scabra, and Momordica (M.) foetida, in order to explore their potential as novel sources of filaricides for the sustainable management of filariasis. Methods: Nine crude extracts from these three plants were prepared and screened in vitro against the microfilariae and adult worms of Onchocerca (O.) ochengi. Viability of O. ochengi adult male worm and mf was ascertained by microscopy while that of adult female worm of O. ochengi was by MTT/formazan assay. Cytotoxicity and acute toxicity were assessed in LLC-MK2 cells and in balb/c mice, respectively. Results: At the single highest concentration of 500 μg/mL, all the extracts were active on O. ochengi adult males while seven showed activity on adult females and microfilariae. The methylene chloride extract of M. foetida was the most active on O. ochengi with IC50s of 30.3 μg/mL, 40.3 μg/mL, and 44.2 μg/mL on males, females, and microfilariae, respectively. Selectivity indexes for the most active extract were 3.5 μg/mL (microfilariae), 3.9 μg/mL (females), and 5.1 μg/mL (males). There was no physical sign of acute toxicity and no hepatocellular injury to balb/c mice. Conclusions: Extracts of Cassia alata, Zheneria scabra and M. foetida contain nematocidal properties with the methylene chloride extract of M. foetida being the most active on the adult worms and juvenile stages of O. ochengi. These findings provide a base for the isolation of anti-filarial lead molecules from the extract.
    3  Genetic resistance factors and antimicrobial resistance phenotypes in methicillinresistant Staphylococcus aureus isolates of animals and humans
    Aliyu Abdulkadir
    2025(3):124-130. DOI: 10.4103/ohbl.ohbl_55_24
    [Abstract](508) [HTML](0) [PDF 801.36 K](1340)
    Abstract:
    Objective: To investigate the prevalence, genetic resistance factors, and antimicrobial resistance phenotypes of methicillin-resistant Staphylococcus (S.) aureus (MRSA) from clinically healthy animals (horses, dogs, and cats) and their human handlers, providing a baseline for broader genes sequencing based on One Health studies to the emergence of resistance as well as guides regarding specific therapies, hospital antibiotic usage/stewardship, and target-specific infection control measures. Methods: This cross-sectional study involved both human and animals. S. aureus isolates derived were characterised for their antimicrobial phenotypes through antimicrobial susceptibility testing with PCR detection of mecA, mecC, and DNA sequencing of mepR, mepA, mepB, and sapep genes for correlation with their antimicrobial resistance phenotypes. Results: Seventy S. aureus isolates from 149 human handlers, 240 horses, and 206 companion animals, including dogs and cats were studied. The prevalence of resistance was highest for penicillins (100.0%) and amoxicillin (94.3%), followed by erythromycin (87.7%), trimethoprim (78.6%), azithromycin (77.1%), imipenem (61.4%), and tetracycline (40.0%). Lower resistance prevalences were observed for ciprofloxacin (27.1%), chloramphenicol (20.0%), trimethoprim-sulfamethoxazole (12.9%), and gentamicin (2.9%). Twenty-six isolates had their DNA sequenced for mepR, mepA, mepB, and sapep genes for correlation with their antimicrobial phenotypes. Transcriptional profiling revealed that both animal and human MRSA isolates exhibited a gene cluster mepRAB (multidrug export protein gene), encoding a MarR-like transcriptional regulator (mepR), a M20/ M25/M40 metallo-hydrolase protein gene (sapep) encoding resistance to biocides and carbapenems, and a hypothetical protein gene of unknown function (mepB). Conclusions: This study demonstrated extensive multidrug resistance in MRSA, revealing similarities in the resistance patterns and multiple antibiotic resistance indices among the isolates. These findings suggest the potential presence of non-mec resistance mechanisms in MRSA, in addition to the mec gene mechanism
    4  Ending future pandemics: An expert panel discussion
    Chaowei Wen Danli Xie Xiang Li Xiaoqun Zheng Yongliang Lou Jiahai Lu
    2025(2):47-50. DOI: doi: 10.4103/ohbl.ohbl_40_24
    [Abstract](506) [HTML](0) [PDF 301.12 K](1271)
    Abstract:
    Since the 20th century, global health security related biosafety risks have progressively intensified. Major public health crises, primarily caused by infectious diseases, have become more frequent. Additional concerns, such as population aging, the prevalence of chronic non-communicable diseases like hypertension and diabetes, the growing problem of antimicrobial resistance, and the ongoing effects of global environmental changes and worsening air pollution, have increased health risks for humanity. One Health, a multidisciplinary and cross-regional collaboration strategy that encompasses human, animal, and environmental health care, has become a key internationally recognized strategy for addressing significant and complex human health issues. On April 2, 2024, the One Health Innovation and Development Forum was held at Wenzhou Medical University. At this forum, experts from around the world gathered to discuss topics such as infectious disease prevention and control, vaccine development, antibiotic resistance, food safety, and environmental health. They reached a consensus and took action to jointly promote the realization of a global community of health for all.
    5  The epidemiological trends of 40 national notifiable infectious diseases in China: An analysis of national surveillance data from 2013 to 2022
    Hongrang Zhou Xiaoling Wang Guifu Li Zhe Zhou Xiaoming Wang Jingfei Hu Yufeng Wang Muxin Chen Kaiyou Ye Ning Xiao Lin Ai
    2025(1):21-32. DOI: 10.4103/ohbl.ohbl_26_24
    [Abstract](469) [HTML](0) [PDF 1.34 M](605)
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    Objective: It aims to provide a preliminary analysis of the epidemiological characteristics and trends of 40 notifiable infectious diseases in the mainland of China over the past ten years, serving as a valuable reference for public health policies and interventions related to infectious diseases. Methods: Using data from the monthly analysis reports of the National Infectious Disease Surveillance System, we obtained information on reportable infectious diseases in China from 2013 to 2022. The data were analyzed using Excel 2010 software, and a joinpoint regression model was employed to examine trends in incidence and case-fatality ratios during this period. Results: From 2013 to 2022, a total of 76 874 318 cases of notifiable infectious diseases were reported in the mainland of China, resulting in an average yearly incidence of 551.26/100 000 persons, with an average annual percentage change (AAPC) was 0.23% (95%CI: -3.81 to 4.37). The infectious diseases with the highest yearly incidence include hand, foot and mouth disease, hepatitis B, infectious diarrhea, tuberculosis, and influenza. There were 207 216 deaths with an average annual case-fatality rate of 2.70/1 000, with an AAPC of 5.53% (95%CI: 2.16 to 9.30). The diseases with the highest mortality rates were acquired immune deficiency syndrome (AIDS), tuberculosis, rabies, infectious diarrhea, and COVID-19. The incidence of notifiable infectious diseases was predominantly attributed to category C diseases, accounting for 54.50% of total cases, while intestinal infectious diseases were the most prevalent, comprising 40.64% of the total morbidity. The monthly incidence trend of 40 notifiable infectious diseases in China’s mainland exhibited a "W" distribution, whereas the monthly case-fatality ratio trend displayed an "M" distribution. Conclusions: It is crucial to continuously reinforce the prevention and control of key infectious diseases, including AIDS, tuberculosis, and viral hepatitis, as well as highly prevalent diseases such as hand, foot and mouth disease, influenza, and infectious diarrhea. Additionally, enhancing surveillance and response to emerging infectious diseases is essential to safeguarding public health and safety.
    6  Characteristics and containment of the outbreak caused by the SARS-CoV-2 Omicron variants in Shanghai, China: A retrospective study
    Hongrang Zhou Xiaoling Wang Guifu Li Xiaoming Wang Zhe Zhou Wen Kong Yinjun Pan Xingxing Xu Kaiyou Ye Junfeng Pan Ning Xiao
    2022(2):1-8. DOI: 10.4103/2773-0344.362641
    [Abstract](457) [HTML](0) [PDF 437.47 K](1580)
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    Objective: The study aimed to describe the characteristics and containment of the Omicron variants in Shanghai compared with the previous severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants in China. Methods: We summarized the data retrieved from the Shanghai Municipal Health Commission from January to June 2022 and the National Health Commission of the People’s Republic of China from March 2020 to August 2021. Epidemiological analysis was utilized to describe the differences among SARS-CoV-2 variants and the infection situation in the outbreaks in China. Results: The Omicron variants had the characteristics of high insidiousness, rapid transmission, high infectivity, and short incubation period, which were consistent with the characteristics of outbreaks caused by Omicron in other regions in China and abroad. There were 568 978 asymptomatic infections in Shanghai from Feburary 26 to June 30, 2022, accounting for 90.73% of the SARS-CoV-2 infections in this outbreak wave. It’s significantly different from a total of 23 277 SARS-CoV-2 infections in China between March 31, 2020 and August 8, 2021, of which 41.97% of the cases were asymptomatic infections. Conclusions: Compared with previous outbreaks emerged in China, the Omicron outbreak in Shanghai was characterized by multiple point dissemination, wide coverage, a large number of close contacts of confirmed infections and asymptomatic carriers, and difficult source tracing. The lessons from Shanghai’s response to Omicron showed that the dynamic zero-COVID policy is still the most suitable response to the virus which can quickly find the infections and curb the transmission route.
    7  Prevalence, phenotype and genotype characteristics of antibiotic resistance in coastal beach practitioners of tropical China
    Wenfang Long Tianjiao Li Guohui Yi Feng Liang Gaoyao Hu Jizhen Wu Hairong Huang Mingxue Li
    2022(2):1-7. DOI: 10.4103/2773-0344.343630
    [Abstract](428) [HTML](0) [PDF 564.30 K](1554)
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    Objective: To investigate the genetic mechanism and prevalence of antibiotic resistance among the practitioners of two bathing beaches in tropical China. Methods: Totally 259 strains were isolated from the rectal swabs of the practitioners and screened by MacConkey agar. A questionnaire survey was conducted. Kirby-Bauer test was used for phenotype, and double disc inhibition synergy test was used for extendedspectrum β-lactamase-producing Enterobacteriaceae (ESBL-E), which was further confirmed by VITEKII instrument. The genotype was detected by polymerase chain reaction, and the similarities of ESBL-E were analyzed using pulsed-field gel electrophoresis. Results: The prevalence of ESBL-E was 13.1% (34/259), of which, CTX-M genes accounted for 44.1% (15/34), mainly CTX-M-14 and CTX-M-27. Moreover, 19.1% (4/21) of the isolates were homologous. The resistance phenotypes of ESBL-E to chloramphenicol, ciprofloxacin, levofloxacin, ceftazidime, cefepime and gentamicin were different between two beaches(PCTX-M genes at the island beach, while a high prevalence of ESBL-E was found at the city beach and clone transfer occurred. Conclusions: ESBL-E-associated gentamicin antibiotic resistance risk may be greater for island beach practitioners. The city beach populations could face more potential risks owing to severe resistance and metastatic ability of ESBL-E. The environmental exposure mechanisms and transfer role of antibiotic resistance at public beaches with high density should be investigated.
    8  Helicobacter pylori infection in a multi-ethnic population in east coast of Borneo, Malaysia: The effects of ethnicity
    Ooi-Cheng Lee Chung-Ket Lai
    2022(2):1-5. DOI: 10.4103/2773-0344.345316
    [Abstract](413) [HTML](0) [PDF 396.49 K](1493)
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    Objective: To determine the prevalence of Helicobacter (H.) pylori infection among the population of east coast of Borneo and explore the relationship between demographic factors, ethnicity and risk of H. pylori infection. Methods: This cross-sectional study enrolled 211 patients who underwent elective oesophagogastroduodenoscopy in 2017. Demographic data, endoscopic indications as well as the results of the mucosal biopsy were obtained and analysed from the endoscopy unit registry. Results: A total of 211 patients from 14 ethnic groups were enrolled in the study, most of were Chinese (28.4%), followed by Dusun (14.7%) and Songgai (13.7%). Overall, the period prevalence for 2017 was 44.5%. Multivariate logistic regression analysis showed an association between ethnicity and H. pylori. Bajau (adjusted odds ratio=5.612, P=0.005) and Dusun ethnic groups (adjusted odds ratio=7.359, P=0.001) were at a significantly higher risk of H. pylori infection compared to Chinese. However, the regression model only explained 11.6% (Cox & Snell Pseudo R2 ) of the prevalence of H. pylori infection. Conclusions: The period prevalence for 2017 was 44.5%, with certain indigenous ethnic groups having a higher risk than others. Clinicians should consider obtaining further history regarding the ethnic’s culture and dietary practice prior to starting H. pylori eradication therapy.
    9  One Health: Transboundary challenges and prospect for cooperation
    Jun Yang
    2021, 1(1):1-1. DOI: 10.4103/2773-0344.329022
    [Abstract](409) [HTML](0) [PDF 177.54 K](2408)
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    10  Emerging and re-emerging diseases: A narrative review
    Subhhojeet Biswas Hemant K. Khuntia Madhusmita Bal Sanghamitra Pati Manoranjan Ranjit
    2023(3):1-7. DOI: 10.4103/2773-0344.389607
    [Abstract](404) [HTML](0) [PDF 346.06 K](2056)
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    Infectious diseases remain a serious concern all over the world due to its significant impact on public health and economic stability. About 30 new causative organisms have been discovered over the past few decades, most of which are zoonotic in origins. Thus, infectious diseases are now posing a never-ending challenge to human civilisation. As a result, constant awareness along with adoption of effective strategies to control infectious disease spread has now become crucial. This review gives valuable information on diseases that emerge and re-emerge every now and then. The paper also highlights challenges related to tackling of infectious diseases in present scenario and significance of employing strategies for effective control in near future against various deadly infectious diseases like COVID-19.
    11  The pattern of antibiotics prescription and consumption: A cross-sectional study
    Maiada Mahmoud Hashem Shams Ebthal Mamdouh Hamdy Karim Atia Mohamed Mai Othman Qwaider Belal El-Agha Sarah Abd-Alhamed Elmatary
    2022(2):1-8. DOI: 10.4103/2773-0344.356988
    [Abstract](393) [HTML](0) [PDF 398.33 K](1418)
    Abstract:
    b>Objective: To investigate the antibiotic utilization and prescription patterns as well as define its convenience to the norm in four North- Sinai hospitals, Egypt. Antimicrobial resistance is a universal health threat. The golden era of miracle antibiotics has ended and we have faced the challenge of being troubled by infectious diseases with no discovery of new antibiotics found since 1987. Antibiotic pressure, overuse, and misuse are important risk factors for antimicrobial resistance and hospital cross-infection. To combat antimicrobial resistance, Egypt started its National Action Plan (2018-2022) aiming to optimize the usage and consumption of antibiotics. Method: This multicenter descriptive cross-sectional study was designed to describe the pattern of antibiotic prescription and consumption at four North Sinai Hospitals related to the Ministry of Health and Population. We reviewed 309 medical records of the inpatient department; the samples were selected through a stratified random sampling technique. Data were collected retrospectively from the medical records of the hospitalized patients in October, November, and December of 2020 by a paper-based method. Data were analyzed using descriptive statistics. Result: The prevalence of antibiotic consumption is near 68.9% in the four hospitals indicating that two-thirds of admitted patients receive antibiotics. Approximately 52.1% administered antibiotics for no reason. Most of the admitted patients took antibiotics on the same day of admission, regardless of the different types of hospital departments. Furthermore, 98.7% of antibiotics were prescribed without culture or order for culture and microbiological tests. Broad-spectrum antibiotics were 90% of all antibiotics prescribed. A total of 18 types of antibiotics were prescribed, cefotaxime was the most commonly prescribed antibiotic representing 26.5%. Conclusion: Judicious antibiotic prescribing behavior slows down the nature of antibiotic resistance. To guarantee the best antimicrobial use in the hospitals, standard treatment guidelines, and the Essential Medicines List for infectious diseases should be carried out and revised at least every 2 years to be a clinical reference for clinicians. Continuous education and training of clinicians and healthcare workers can contribute to optimizing the rational use of antibiotics, which in return reduces the progress of antibiotic resistance. There is an urgent need for antibiotic stewardship and surveillance and their application in all hospitals.
    12  Are multiple courses of antibiotics a potential risk factor for COVID-19 infection and severity?
    Maiada Mahmoud Shams Ebthal Mamdouh Hamdy Dina Fawzy Abd-elsadek
    2023(3):1-9. DOI: 10.4103/2773-0344.378589
    [Abstract](392) [HTML](0) [PDF 469.52 K](1851)
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    Objective: : To determine the potential risk factor of COVID-19 severity and length of hospitalization, the association between multiple antibiotics administration and the risk of severe COVID-19. Methods: :A case-control study of 58 hospitalized COVID-19 patients (the case group) and 120 non-hospitalized home isolated COVID-19 patients (the control group) was conducted. Data were collected using hospital medical records and verbal questionnaires for the participants. Results: : Totally 89.2% of non-hospitalized mild COVID-19 patients received ≤2 courses of antibiotics/year, while 36.0% of hospitalized patients received ≥4 courses of antibiotics, 56.9% received 2-3 courses of antibiotics/year and only 6.9% of them were exposed to ≤2 courses of antibiotics/year. our study emphasizes that the usage of 4 courses or higher per year was a significant risk factor for hospitalization [OR: 17.5; 95% CI (2.596-118.263); P=0.003], while the usage of ≤2 courses was a preventive predictor for severity and hospitalization [OR: 0.072; 95%CI (0.006-0.900); P=0.041]. Furthermore, age was associated with 8.4% increase in the odds of severe COVID-19 [OR: 1.084; 95% CI (1.024-1.148), P=0.005], and females were 89.1% less likely to hospitalized than males [OR: 0.109; 95% CI (0.024-0.498); P= 0.004]. Our study shows that 70.4% of cases misused antibiotics and administered the antibiotics themselves without a physician’s prescription. Around 50.0% of cases never completed the ideal duration of the course in contrast to controls, of which only 23.2% did not complete the ideal duration. Conclusions: : Our study shows that antibiotics misuse and overuse may be a potential risk factor for COVID-19 severity and hospitalization.
    13  Knowledge and practice of malaria prevention among residents of Ratuwamai Municipality, Nepal
    Rajesh Karki Niruta Bartoula Maheshor Kaphle Sanjaya Kumar Shah
    2023(3):1-7. DOI: 10.4103/2773-0344.374224
    [Abstract](389) [HTML](0) [PDF 385.70 K](1541)
    Abstract:
    Objective: To assess the level of knowledge and practice on malaria prevention among the residents of Ratuwamai Municipality in Nepal. Methods: A community-based cross-sectional study was carried out on Ratuwamai Municipality of Ward No. 8 in Morang District, Nepal. A total of 352 respondents with an age range from 15 to 70 years were interviewed from October 9 to October 31, 2022. Statistically significant differences between two or more categorical groups were measured using independent sample t-test, one-way ANOVA test, and Kruskal-Wallis H test. Result: Out of the total sample, 57.7% of the respondents were 24 to 50 years old with a mean age of (36.9±14.3) years. In the knowledge test, 82% of the responses were accurate. Though 98.6% of people had heard of malaria, only 48.3% said it was a communicable disease. In practice, 84.9% always cleaned the surrounding area and trimmed the bushes around the house; 75.9% used insecticide-treated bed nets or normal bed nets for sleeping; only 7.4% used mosquito repellent creams on exposed body parts while staying outdoors at night, working in fields, and sleeping. Conclusions: The majority had knowledge about malaria, but more than half had poor practice. We advise concerned authorities to promote the behavior change communication strategy to encourage individuals to adopt healthy, beneficial, and good behavioral practices.
    14  Multidrug resistance in bacteria isolated from indoor air of female hostels in a tertiary institution
    Testimonies Chikanka Adebayo-Olajide Moriamo Olorunkemi Olorunfunmi
    2022(2):1-6. DOI: 10.4103/2773-0344.356847
    [Abstract](385) [HTML](0) [PDF 427.23 K](1455)
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    Objective: To determine the occurrence of multidrug resistant bacteria from the indoor environment of female hostels in a tertiary institution in order to provide epidemiological data. Methods: The bacterial quality of the three female hostels was evaluated using the settle plate method, where Petri dishes containing different types of culture media were opened in the rooms. Isolated bacteria were identified using standard microbiological procedures. Using disc diffusion method, the antibiogram of the isolates was determined and based on this, the multiple antibiotics resistance index was also determined. Results: The total heterotrophic colony forming units(CFU) for Hall A ranged from 2.09 x102 to 1.73 x103 CFU/m3 while that of Hall B ranged from 4.71 x102 to 1.10 x103 CFU/m3 and a statistically significant difference between the counts of both halls was observed (P=0.04). Microorganisms isolated included Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis, Corynebacterium sp., Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis. All the isolates exhibited multidrug resistance to amoxycillin-clavulanic acid, cefuroxime and ceftriaxone. Proteus mirabilis, Klebsiella pneumoniae and Corynebacterium sp. had the least multiple antibiotic resistance index with 0.2 while Staphylococcus aureus had the highest with 0.8. Conclusions: Female university hostels may become sources of exchange of microorganisms, especially in overcrowded rooms. A large percentage of isolates were multidrug resistant which could pose difficulty and increased cost of treatment of their resulting infections. Regular surveillance and control of the agents that encourage the growth of these bacteria present in indoor air is needed.
    15  Mucosal immune probiotic vector vaccines: Development and prospects for application in COVID-19
    Renyun Zha Boyang Yi Conghui Liao Xiaokang Li Jiahai Lu
    2023(3):1-15. DOI: 10.4103/2773-0344.387693
    [Abstract](369) [HTML](0) [PDF 732.19 K](1540)
    Abstract:
    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a global pandemic of infectious disease characterized by significant morbidity, symptomatic manifestations, and severe outcomes. Vaccines have proven to be an effective means of impeding the transmission of SARS-CoV-2, and have been widely employed globally. Despite breakthroughs such as mRNA vaccine, intramuscular COVID-19 vaccine still faces numerous chanllenges, such as failure to completely avoid infections, high cost, and difficult transport conditions. The mucosa is the primary site through which SARS-CoV-2 invades the body and may induce effective immune responses. In the face of the increasing immune escape capacity of the Omicron variants and the potential outbreak of a new round of epidemics, it is imperative to develop a new generation of mucosal immune vaccines to prevent infection, which is mainly transmitted through the respiratory tract, along with its severe and fatal consequences. Probiotics have not only been used as safe raw materials for fermented foods but have also been developed as oral or nasal vaccine vectors for various pathogens in recent years, showing good mucosal and systemic immune effects in animals or humans. Although the antigen delivery technology based on protein anchoring on the surface of probiotics is rarely applied to COVID-19, probiotic-based vaccines aim at a new development direction for COVID-19 vaccines with low cost, high safety, and potential mucosal immune programs. In this review, we will discuss in detail the feasibility, advantages, and possible limitations of probiotics as a mucosal immune vaccine vector, which will be conducive to coping with the current situation of COVID-19.
    16  High burden of extended spectrum β-lactamase (ESBL)-encoding genes in thirdgeneration cephalosporin-resistant Escherichia coli recovered from frequently contacted surfaces and wastewater of selected healthcare institutions in Nigeria
    Omowunmi Abosede Banjo Abimbola Olumide Adekanmbi Sodiq Abiola Abolade
    2023(3):1-7. DOI: 10.4103/2773-0344.363564
    [Abstract](364) [HTML](0) [PDF 492.67 K](2078)
    Abstract:
    Objective: This study aimed to determine the carriage of extended spectrum β-lactamase (ESBL) genes in third-generation cephalosporin-resistant (3GCR) Escherichia (E.) coli from frequently contacted surfaces, wastewater and disinfectant-cleaning solutions of selected healthcare institutions in South-western Nigeria. Methods: Samples were collected over three months for the isolation of 3GCR E. coli on MacConkey agar containing 6 μg/mL of cefotaxime. 3GCR E. coli isolates were identified by detection of uidA gene and susceptibility to selected antibiotics was performed using disc-diffusion method. Detection of ESBL genes was done using primer-specific PCR. Results: A total of 22 ESBL-producing E. coli (11 each from the frequently contacted surfaces and wastewater) were obtained from the pool of 3GCR isolates in this study. No isolate was recovered from the disinfectant-cleaning solution. All the ESBL-producing E. coli obtained from the frequently contacted surfaces and wastewater were multidrug resistant, with complete resistance observed to ampicillin, cefotaxime, cefpodoxime, tetracycline and ertapenem. The ESBL genotyping showed that 54.5% carried blaCTX-M , 63.6% carried blaTEM and 9.1% carried blaSHV in isolates from the frequently contacted surfaces, while 63.6%, 9.1% and 18.2% carried blaCTX-M , blaTEM and blaSHV , respectively, in the isolates obtained from the wastewater. Conclusions: This study showed a high burden of multidrug resistance E. coli on frequently contacted surfaces and wastewater of the studied healthcare institutions, indicating the need for good hygiene and proper mitigation measures to prevent potential public health and environmental challenges.
    17  Malaria elimination measures in Guangdong, China
    De Wu Rongxin Lin Zhuohui Deng Bo Pan Fuquan Pei
    2022(2):1-3. DOI: 10.4103/2773-0344.348853
    [Abstract](344) [HTML](0) [PDF 339.49 K](1454)
    Abstract:
    “One Health” perspective has now been upheld and advocated by many countries and international institutions such as the World Health Organization, the Food and Agriculture Organization of the United Nations, and the World Organization for Animal Health, and the World Bank Groups. At present, 19 countries, 5 international institutions and 4 regional organizaitons are working jointly to promote “One Health” perspective, with two important development trends. First, it should be put into practice with legal support, government will, and cooperation among multiple disciplines and departments; second, it not only covers zoonotic diseases, food safety and antibiotic resistance, but has now been extended to address environmental pollution, biosecurity, public health risks at ports and other fields. Taking the global fight against the COVID-19 pandemic as an example, the world now is facing unprecedented challenges, urgently calling for an exploration into institutional innovation, agency innovation and means innovation from the perspective of “One health” so as to enhance the governance efficiency of public health management.
    18  The effects of climate change: Spreading of zoonotic arthropod-borne diseases in Europe
    Valentina Virginia Ebani
    2022(2):1-2. DOI: 10.4103/2773-0344.347379
    [Abstract](338) [HTML](0) [PDF 253.13 K](1464)
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    19  COVID-19 breakthrough infection after four doses of the vaccines: A case report
    Hongrang Zhou Guifu Li Xiaoming Wang Zhe Zhou Wen Kong Jingfei Hu Kaiyou Ye Wenjiang Zhong Xiaoling Wang Ning Xiao
    2023(3):1-3. DOI: 10.4103/2773-0344.374229
    [Abstract](331) [HTML](0) [PDF 363.71 K](1507)
    Abstract:
    The COVID-19 vaccines provide a high degree of protection against severe disease, hospitalisation, and death. However, no vaccine claimed 100% effectiveness and it is expected that a small proportion of vaccinated individuals may develop a breakthrough infection due to individual differences, virus variants and other factors. We conducted an epidemiological investigation and analysis of an imported case who had finished four doses of vaccination, and in order to provide a relevant reference for regular epidemic prevention and control in the post-pandemic era.
    20  Knowledge, attitude and practices (KAP) toward COVID-19 and its prevention among graduate students at Bahir Dar University, northwestern Ethiopia: A crosssectional study
    Belaynesh Tazebew Abaineh Munshea Mastewal Alehegn
    2023(3):1-10. DOI: 10.4103/2773-0344.376722
    [Abstract](316) [HTML](0) [PDF 550.48 K](1461)
    Abstract:
    Objective: SARS-CoV-2 infection is an ongoing public health emergency of international significance. Considering that there is no specific drug and 100% effective vaccine yet, knowledge, attitude and practices (KAP) toward COVID-19 are crucial to prevent and manage the pandemic. This study aimed to assess knowledge, attitude and practices toward COVID-19 prevention measures of graduate students at a university in northwestern Ethiopia. Methods: A cross-sectional study design was conducted between September to December 2020. A structured questionnaire was used to collect data on socio-demographic characteristics and KAP of 407 randomly selected individuals. The data were exported to SPSS version 23.0, and bivariate and multivariate logistic regressions were used for analyses. Variables with P<0.25 in the bivariate logistic regression analysis were retained into the multivariable logistic regression models. The values were considered to be statistically significant ( P≤0.05). The data quality control was tested by using 5% pretest. Results:Among 407 participants, 267 (65.6%) had sufficient knowledge, 239 (58.7%) had positive attitude and 189 (46.4%) had good practices toward COVID-19. Marital status (AOR 0.38; 95%CI 0.11-0.95; P=0.040) and student admission type (AOR 0.32; 95%CI 0.15-0.68; P=0.003) had a statistically significant association with knowledge of students. Residence (AOR 0.18; 95%CI 0.09- 0.34; P<0.01) (AOR 0.16; 95%CI 0.07-0.36; P<0.01), family size (AOR 0.45; 95%CI 0.23-0.87, P=0.017) (AOR 0.29; 95%CI 0.14-0.60; P=0.001), student admission type (AOR 0.11: 95%CI 0.04-0.29, P<0.01) (AOR 0.01; 95%CI 0.00-0.05; P<0.01) and monthly income (AOR 0.17; 95%CI 0.05-0.58; P=0.005) (AOR 0.08; 95%CI 0.02-0.32; P<0.01) were significantly associated with positive attitude and good practices, respectively. Besides, good practices such as avoiding handshaking and physical distancing were performed in the least amount of participants. Conclusions: The scores of KAP among graduate students toward COVID-19 are low. It is recommended that university administrators reinforce proactive and effective measures to develop good knowledge, positive attitude, and better practices regarding COVID-19 for the students.

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