Zijian Feng
A5100866265- Influenza Virus Research Studies
- Animal Disease Management and Epidemiology
- Respiratory viral infections research
- Viral Infections and Vectors
- COVID-19 epidemiological studies
- Vaccine Coverage and Hesitancy
- SARS-CoV-2 and COVID-19 Research
- Viral gastroenteritis research and epidemiology
- Viral Infections and Outbreaks Research
- COVID-19 Clinical Research Studies
- Viral Infections and Immunology Research
- Virology and Viral Diseases
- Zoonotic diseases and public health
- Rabies epidemiology and control
- COVID-19 and Mental Health
- Yersinia bacterium, plague, ectoparasites research
- Data-Driven Disease Surveillance
- SARS-CoV-2 detection and testing
- Bacillus and Francisella bacterial research
- Hepatitis B Virus Studies
- Mosquito-borne diseases and control
- Immune responses and vaccinations
- Malaria Research and Control
- Travel-related health issues
- Pneumonia and Respiratory Infections
Sun Yat-sen University
2025
Chinese Preventive Medicine Association
2021-2024
Chinese Center For Disease Control and Prevention
2014-2023
National Center for Immunization and Respiratory Diseases
2019-2023
Beijing Center for Disease Prevention and Control
2012-2021
National Institute for Viral Disease Control and Prevention
2021
Second Hospital of Yichang
2021
Peking University
2021
Center for Disease Control
2010-2020
Chengdu Center for Disease Control and Prevention
2020
The initial cases of novel coronavirus (2019-nCoV)-infected pneumonia (NCIP) occurred in Wuhan, Hubei Province, China, December 2019 and January 2020. We analyzed data on the first 425 confirmed Wuhan to determine epidemiologic characteristics NCIP.We collected information demographic characteristics, exposure history, illness timelines laboratory-confirmed NCIP that had been reported by 22, described estimated key time-delay distributions. In early period exponential growth, we epidemic...
Infection of poultry with influenza A subtype H7 viruses occurs worldwide, but the introduction this to humans in Asia has not been observed previously. In March 2013, three urban residents Shanghai or Anhui, China, presented rapidly progressing lower respiratory tract infections and were found be infected a novel reassortant avian-origin (H7N9) virus.We obtained analyzed clinical, epidemiologic, virologic data from these patients. Respiratory specimens tested for other by means real-time...
This study analyzes data from 19 countries (from April 2009 to Jan 2010), comprising some 70,000 hospitalized patients with severe H1N1 infection, reveal risk factors for pandemic influenza, which include chronic illness, cardiac disease, respiratory and diabetes.
The first identified cases of avian influenza A(H7N9) virus infection in humans occurred China during February and March 2013. We analyzed data obtained from field investigations to describe the epidemiologic characteristics H7N9 as December 1, 2013.Field were conducted for each confirmed case infection. A patient was considered have a if presence verified by means real-time reverse-transcriptase-polymerase-chain-reaction assay (RT-PCR), viral isolation, or serologic testing. Information on...
Abstract Hand, foot and mouth disease (HFMD), a common contagious that usually affects children, is normally mild but can have life-threatening manifestations. It be caused by enteroviruses, particularly Coxsackieviruses human enterovirus 71 (HEV71) with highly variable clinical In the spring of 2008, large, unprecedented HFMD outbreak in Fuyang city Anhui province central part southeastern China resulted high aggregation fatal cases. this study, epidemiologic investigations, laboratory...
Abstract Coronavirus disease 2019 (COVID-19) was detected in China during the 2019–2020 seasonal influenza epidemic. Non-pharmaceutical interventions (NPIs) and behavioral changes to mitigate COVID-19 could have affected transmission dynamics of other respiratory diseases. By comparing activity through March 29, 2020 with 2011–2019 seasons, we found that outbreaks related NPIs may reduced Southern Northern United States by 79.2% (lower upper bounds: 48.8%–87.2%), 79.4% (44.9%–87.4%) 67.2%...
There were large outbreaks of hand, foot, and mouth disease in both 2008 2009 China.Using the national surveillance data since 2 May 2008, we summarized epidemiologic characteristics recent outbreaks. Using a susceptible-infectious-recovered transmission model, evaluated transmissibility potential risk factors.Children ages 1.0 to 2.9 years most susceptible (odds ratios [OR] >2.3 as compared with other age-groups). Infant cases had highest incidences severe (ORs >1.4) death >2.4), well...
Background. Data on risk factors for severe outcomes from 2009 pandemic influenza A (H1N1) virus infection are limited outside of developed countries.
Human infections of H5N1 highly pathogenic avian influenza virus have continued to occur in China without corresponding outbreaks poultry, and there is little conclusive evidence the source these infections. Seeking identify human infections, we sequenced 31 viruses isolated from humans (2005 2010). We found a number viral genotypes, not all which similar known counterparts. Guided by patient questionnaire data, also obtained environmental samples live poultry markets dwellings frequented...
While human cases of highly pathogenic avian influenza A (H5N1) virus infection continue to increase globally, available clinical data on H5N1 are limited. We conducted a retrospective study 26 confirmed identified through surveillance in China from October 2005 April 2008.
To estimate influenza-associated mortality in urban China.Influenza-associated excess for the period 2003-2008 was estimated three cities temperate northern China and five subtropical south of country. The estimates were derived from models based on negative binomial regressions, vital statistics results weekly influenza virus surveillance.Annual mortality, all causes, 18.0 (range: 10.9-32.7) deaths per 100,000 population 11.3 7.3-17.8) southern cities. Excess respiratory circulatory disease...
In China, 30 human cases of avian influenza A (H5N1) virus infection were identified through July 2008. We conducted a retrospective case-control study to identify risk factors for H5N1 disease in China.
Since the first outbreak of avian influenza A(H7N9) virus in humans was identified 2013, there have been five seasonal epidemics observed China. An earlier start and a steep increase number infected with H7N9 between September December 2016, raising great public concern domestic international societies. The epidemiological characteristics recently reported confirmed cases were analysed. results suggested that although more recently, most fifth epidemic still highly sporadically distributed...
Hemorrhagic fever with renal syndrome (HFRS) caused by hantaviruses is a serious public health problem in China. The National Notifiable Disease Surveillance System (NNDSS) was established online China CDC 2004 and rodent surveillance sites were adjusted to 40 22 provinces 2005. Here we analyzed the data of both human cases rodents host during 2006-2012 examine epidemic trends HFRS recent years China.Records on from 2006 2012 analyzed. Phylogenetic tree based complete sequence M segment 58...