When are people with influenza most contagious?

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. 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 ... Mar 21, 2025 ... The most severe influenza outbreak of the 20th century and, in terms of total numbers of deaths, among the most devastating pandemics in human history. Nov 6, 2023 ... Period flu isn't the flu or an official medical diagnosis. It's a type of premenstrual syndrome (PMS), which can cause symptoms similar to the flu. In this section · What is Influenza? · Influenza Symptoms · What Causes Influenza? · Influenza Testing and Diagnosis · Influenza Treatment ... Sep 19, 2024 ... In infants, RSV can cause pneumonia or bronchiolitis, and people over the age of 50 or those with heart or lung disease are also at risk for ... May 12, 2021 ... We found that infection with a neurotropic influenza A virus strain (IAV/WSN) caused misfolding of PrP C into PrP Sc and generated infectious prions in mouse ... What Causes Influenza? Influenza is caused by several different viruses that are in the influenza family. Each year, flu season is defined by a few ... 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? Mar 8, 2024 ... Influenza encephalitis · Symptoms. In a broad sense, clinical characteristics encompass a combination of flu symptoms and central nervous system ...