What are the potential complications of influenza?

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 ... Jun 1, 2007 ... Different patterns of influenza incidence in a total population, caused by different patterns of social interaction among four etiologically distinct age ... The deadliest pandemic of the 20th century. The 1918 influenza outbreak was caused by a new strain of the influenza A virus that started in birds (H1N1). After ... 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 ... 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. May 1, 2023 ... Infectious Agent. Influenza is caused by infection of the respiratory tract with influenza viruses, RNA viruses of the Orthomyxovirus genus. The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. The flu is a contagious respiratory illness caused by influenza viruses. The flu can cause mild to severe illness. If left untreated, it could lead to ... Nov 15, 2021 ... Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. There ... 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 ...