WebMay 18, 2024 · Flu (influenza) viruses are divided into four broad categories: influenza A, B, C or D. Influenza A is the most common type. H1N1 flu is a subtype of influenza A. Subtypes of influenza A are categorized based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). WebThe flu is a respiratory disease, but it can affect the whole body. A child can become suddenly ill with any or all of these symptoms: Fever, which may be as high as 103°F (39.4°C) to 105°F (40.5°C) Body aches, which may be …
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WebOct 25, 2024 · Additional key facts about the hepatitis B virus from the CDC include: Around 257 million people around the world have hepatitis B. There are approximately 21,000 new infections in the U.S. each year. WebMar 5, 2024 · A total of 574 patients were included in the study, 369 (64.3%) with influenza A and 205 (35.7%) with influenza B. Investigators found that patients with influenza A … birthday requirements for kindergarten
Flu (Influenza) - Symptoms and Causes - University of …
WebDec 21, 2024 · sneezing. sore throat. fever. headache. fatigue. chills. body aches. Sometimes, influenza A symptoms may resolve on their own. However, if symptoms persist for more than a week without improvement ... WebJun 14, 2024 · The flu is more dangerous for older adults for a few reasons. One reason is that the immune system — which helps your body fight infections — weakens as you age. For example, because your body is busy fighting off the flu, you might pick up a secondary infection such as pneumonia. WebJan 19, 2024 · As of Jan. 13, the U.S. Centers for Disease Control and Prevention (CDC) has estimated that between 16,000 and 48,000 flu people have already died from the flu this season; the final tally... birthday request form