What is the importance of early detection and response to influenza outbreaks?

What some people call the stomach flu is actually another virus or bacteria that causes gastrointestinal illness. Influenza is a respiratory illness that should ... Influenza is a communicable viral disease that affects the upper and lower respiratory tract. A wide spectrum of influenza viruses causes it. The common cold leads to more health care provider visits and absences from school and work than any other illness each year. It is caused by a virus and is ... Influenza seasonality: underlying causes and modeling theories. J Virol. 2007 Jun;81(11):5429-36. doi: 10.1128/JVI.01680-06. Epub 2006 Dec 20. What causes influenza (flu)?. The flu is caused by the influenza virus. Common classes of the virus are type A and type B. Each type includes several ... The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. Influenza D virus can infect humans but is not known to cause illness. In humans, influenza viruses are primarily transmitted through respiratory droplets from ... Four themes were identified as causes of vaccine hesitancy comprising: concerns over safety, lack of trust, lack of need for vaccination and cultural reasons. Influenza (flu) is a very contagious viral infection that affects the air passages of the lungs. It causes a high fever, body aches, a cough, and other ... Viral gastroenteritis is not harmful. However, viral gastroenteritis can become dangerous if it leads to dehydration.