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Molecular characterization of an outbreak-involved Bacillus anthracis strain confirms the spillover of anthrax from West Africa

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Infectious Diseases of Poverty 2024年第1期13卷 93-94页

作者： Shuchao Wang Roland Suluku Mohamed B.Jalloh Ahmed F.Samba Baogui Jiang Yubiao Xie doris harding Mengyao Zhang Foday Sahr Mahmud E.Sesay James S.Squire Mohamed A.Vandi Moinina N.Kallon Shoufeng Zhang Rongliang Hu Yuee Zhao Zhiqiang Mi Changchun Veterinary Research Institute Chinese Academy of Agricultural Sciences Changchun China Department of Animal Sciences School of Agriculture and Food Sciences Njala University Njala Sierra Leone Department of Microbiology College of Medicine and Allied Health Sciences University of Sierra Leone Freetown Sierra Leone Ministry of Agriculture and Food Sciences Freetown Sierra Leone Beijing Institute of Microbiology and Epidemiology Beijing China Ministry of Health and Sanitation Freetown Sierra Leone Beijing Institute of Biotechnology Beijing China

Background Anthrax,a zoonotic disease caused by the spore-forming bacterium Bacillus anthracis,remains a major global public health concern,especially in countries with limited *** Leone,a West African country historically plagued by anthrax,has almost been out of report on this disease in recent *** this study,we described a large-scale anthrax outbreak affecting both animals and humans and attempted to characterize the *** The causative agent of the animal outbreak in Port Loko District,Sierra Leone,between March and May 2022 was identified using the nanopore sequencing technique.A nationwide active surveillance was implemented from May 2022 to June 2023 to monitor the occurrence of anthrax-specific symptoms in *** cases were subsequently verified using quantitative polymerase chain ***-genome sequencing was accomplished by combining long-read and short-read sequencing *** phylogenetic analysis was performed based on the full-chromosome single nucleotide *** The outbreak in Port Loko District,Sierra Leone,led to the death of 233 animals between March 26th and May 16th,*** ruled out the initial suspicion of Anaplasma species and successfully identified *** as the causative agent of the *** a result of the government's prompt response,out of the 49 suspected human cases identifed during the one-year active surveillance,only 6 human cases tested positive,all within the frst month after the official declaration of the *** phylogenetic analysis indicated that the BaSL2022 isolate responsible for the outbreak was positioned in the ***.153 clade within the TransEuroAsian group of *** We successfully identifed a large-scale anthrax outbreak in Sierra *** causative isolate of ***,BaSL2022,phylogenetically bridged other lineages in ***.153 clade and neighboring genetic groups,***.144 and ***.148,

关键词： Molecular identification Anthrax Bacillus anthracis Sierra Leone Phylogeny Single nucleotide polymorphism

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Sustainable Laboratory Capacity Building in Sierra Leone:From Ebola to COVID-19

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China CDC weekly 2023年第28期5卷 632-636页

作者： Lili Wang Alie Brima Tia Bing Xu Xiaopeng Qi doris harding Center for Global Public Health Chinese Center for Disease Control and PreventionBeijingChina Sierra Leone-China Friendship Biological Safety Laboratory Ministry of Health and SanitationFreetownSierra Leone Ministry of Health and Sanitation FreetownSierra Leone

The onset of the Ebola outbreak in 2014 originated in Guinea and proceeded to swiftly reach Sierra Leone and Liberia(1).Unfortunately,these nations were critically deficient in their capacity for pathogenic testing and diagnostics,the availability of healthcare workers,and their supply of epidemic prevention materials,thereby impeding their ability to address the outbreak efficiently(2).This grave scenario underscored the need for support from the worldwide community.

关键词： Ebola prevention thereby

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Dissemination of Antibiotic Resistance Genes Among Patients with Diarrhea — Freetown, Sierra Leone, 2018

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China CDC weekly 2022年第49期4卷 1093-1096页

作者： Xia Chen Enmin Zhang Michael K Abdulai Alie Brima Tia Esther Debora Ngegba Jianhai Yin Songtao Xu Lili Wang Xiaoping Dong doris harding Biao Kan State Key Laboratory of Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing MunicipalityChina Sierra Leone-China Friendship Biological Safety Laboratory Chinese Center for Disease Control and PreventionFreetownSierra Leone and Beijing MunicipalityChina National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchShanghai MunicipalityChina National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing MunicipalityChina Center for Global Public Health Chinese Center for Disease Control and PreventionBeijing MunicipalityChina Ministry of Health and Sanitation FreetownSierra Leone.

What is already known about this topic?Antibiotic resistance(AR)is a serious public health threat ***,the AR and antibiotic resistance genes(ARGs)data from West Africa,especially from Sierra Leone,are *** is added by this report?The study revealed ARGs’common dissemination,and multiplex antibiotic resistance genes in one *** blaNDM and blaOXA-48-like were first discovered in Sierra *** are the implications for public health practice?Basic information is provided for AR research and surveillance and highlights that effective AR surveillance among diarrhea patients is necessary for Sierra Leone and West Africa.

关键词： Antibiotic diarrhea Patients

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