How does genetic reassortment occur in influenza?

The flu is an infection of the nose, throat, and lungs. It spreads easily from person to person. This article discusses influenza types A and B. What Is Avian Influenza? Avian influenza, or “bird flu,” is a respiratory disease of birds caused by influenza A viruses. Wild birds, such as ducks, gulls, ... Bacteria. Bacterial pneumonia can occur on its own or develop after you've had a virus like the cold, flu, COVID-19 or RSV. Jun 8, 2017 ... Antigenic drift in human flu viruses is what causes the changes in seasonal flu viruses each year and is why the seasonal flu vaccine must be ... EI is caused by two subtypes of influenza A viruses: H7N7 and H3N8, of the family Orthomyxoviridae. They are related to but distinct from the viruses that cause ... Jan 14, 2025 ... Bird flu, also known as avian influenza A (H5N1) or highly pathogenic avian influenza (HPAI), is caused by a virus that can cause serious illness and death in ... Jun 1, 2007 ... Different patterns of influenza incidence in a total population, caused by different patterns of social interaction among four etiologically distinct age ... Feb 28, 2024 ... The flu is caused by flu viruses that spread from person to person. When someone with the flu coughs, sneezes, or talks, they spray tiny ... Jan 22, 2018 ... Pandemic flu can happen when an animal influenza A virus (eg bird, pig) changes or mixes with a human flu virus to create a new flu virus strain that can ... What causes it? • Influenza virus. • Can be caused by a virus, bacteria, or fungi. What are the symptoms?