Search results
26 lis 2024 · Monthly reported human cases of H5N1, a type of highly-pathogenic avian influenza. Only a small fraction of potential cases are tested by labs to confirm whether they have influenza and to identify their strain.
The H5N1 virus remains as an animal virus that primarily infects animals. So far, close to 900 human infections have been reported since 2003, of which more than half were fatal. The H5N1 virus is constantly evolving and could potentially become easily transmissible from person to person.
H5N1 infections in humans are generally caused by bird to human transmission of the virus. Until May 2006, the WHO estimate of the number of human to human transmissions had been "two or three cases".
16 lis 2024 · CDC influenza (flu) surveillance systems show no indicators of unusual influenza activity in people, including avian influenza A (H5N1). This page provides information on how CDC systems that monitor national, state, and local level influenza data are being used during the current avian influenza A (H5N1) situation.
Confirmed H5N1 influenza cases, including those confirmed clinically, epidemiologically, or by laboratory investigation. Cases confirmed by laboratory testing. Confirmed cases reported to WHO's Department of Epidemic and Pandemic Alert and Response.
25 paź 2024 · Since 1997, HPAI gs/gd H5N1 has caused nearly 900 human cases in 23 countries, with more than half of these cases resulting in death. To date, the majority of human cases have been those associated with contact with infected poultry, sick backyard birds or linked to poultry markets.
17 lip 2023 · Avian influenza A(H5N1) viruses from Europe were introduced to North America in spring 2022 through migratory birds and spread rapidly across Canada and the US. A further rapid spread was observed across countries in Central and South America with the autumnal bird migration.
