How do antiviral drugs work against influenza?

Jan 14, 2025 ... It's a very rare event, but we know that reassortment has resulted in the influenza viruses that have caused the last three human pandemics. Flu can last from a few days to two weeks. Symptoms like fever and body aches can come on suddenly but usually go away faster than other symptoms. A cough or ... This fact sheet will look at zoonotic influenza (human infections) caused by influenza viruses of avian origin. Since 1997, 2,723 cases of zoonotic human ... Dog flu is a common term to describe a contagious upper respiratory infection in dogs caused by the canine influenza virus. Oct 1, 2006 ... Colds and the flu cause many of the same symptoms. But colds are usually mild, while the flu tends to be more severe. 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 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 ... Bird flu, or avian flu, is an infectious type of influenza that spreads among birds. ... But there are 4 strains that have caused concern in recent years: H5N1 ... ... Flu is a contagious viral infection of the nose and throat but is much more serious than the common cold. In mild cases, flu causes high fever, head and ... The Flu. Similarly, the influenza virus leads to head congestion by infecting your nose, throat and lungs, and causing nasal swelling. People often confuse a ...