theIASHub | 29 Mar, 2024
Context: Scientists recently reported that the deadly H5N1 bird flu virus has spread more aggressively than ever before in wild birds and marine mammals since its arrival in South America in 2022, heightening the risk of it evolving into a larger threat to humans.
Bird Flu
oThese viruses are distinct from human influenza viruses and do not readily spread among humans.
oLow pathogenicity avian influenza (LPAI) that typically causes little or no clinical signs;
oHigh pathogenicity avian influenza (HPAI) that can cause severe clinical signs and possible high mortality rates.
oPrimary host: Wild birds, especially waterfowl, can carry the virus without showing symptoms.
oSecondary host: Domestic poultry (chickens, ducks, turkeys), where the virus can cause severe illness and high mortality rates.
oHuman infections usually occur through close contact with infected birds or their environments.
oIn Birds: Sudden onset of severe illness, Respiratory and digestive symptoms, and High mortality rates in poultry flocks.
oIn Humans: Fever, cough, sore throat, and in severe cases, respiratory distress.
New Type of bird flu Infection
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