What types of tests are used to diagnose influenza?

The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. 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 ... Mar 8, 2024 ... Influenza encephalitis · Symptoms. In a broad sense, clinical characteristics encompass a combination of flu symptoms and central nervous system ... Feb 28, 2024 ... The flu is caused by flu viruses that spread from person to person. When someone with the flu coughs, sneezes, or talks, they spray tiny ... What causes it? • Influenza virus. • Can be caused by a virus, bacteria, or fungi. What are the symptoms? What Causes Influenza? The root cause of the illness is infection from one of the influenza A, B or C viruses. These viruses infect the nose, throat, and ... Feb 28, 2025 ... Seasonal influenza (the flu) is an acute respiratory infection caused by influenza viruses. It is common in all parts of the world. Most people recover without ... Aug 13, 2024 ... Flu is a contagious respiratory illness caused by influenza viruses · Flu can cause mild to severe illness · Most experts believe that flu viruses ... 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 ... Jun 14, 2022 ... Each year, millions of people suffer from seasonal influenza, which is often called the flu. Flu is a respiratory illness caused by viruses that ...