What are the different types of influenza viruses that have caused pandemics in history?

Oct 2, 2017 ... The flu is a highly contagious disease caused by the influenza virus. The virus enters your body through your nose, eyes or mouth. Influenza is a respiratory illness caused by a virus. Any kind of infection, including the flu, can cause sepsis, the body's life-threatening response to ... Feb 12, 2025 ... Generally, influenza viruses can infect some wild species without causing signs of disease, but new strains can emerge that cause illness with ... The flu is caused by a virus. Viruses are generally passed from person to person through the air when an infected person sneezes or coughs. But the virus can ... Jan 28, 2025 ... Symptoms of the flu such as a sore throat and a runny or stuffy nose are common. You may also get these symptoms with other illness such as a ... Oct 12, 2010 ... The disease, caused by a new variant of the influenza virus, was spread in part by troop movements during World War I. Though the flu pandemic ... Sepsis is the body's extreme reaction to any type of infection. The flu, which is a viral infection, can cause secondary complications such as sepsis. Feb 12, 2018 ... We all know the symptoms of influenza infection include fever, cough, sore throat, muscle aches, headaches and fatigue. But just what causes all the havoc? Dog flu is a common term to describe a contagious upper respiratory infection in dogs caused by the canine influenza virus. May develop after a child has a common cold caused by a virus. Conjunctivitis ... What causes Haemophilus influenzae? The H. influenzae bacteria live in ...