Influenza (flu) - Symptoms and causes - Mayo Clinic
6 天之前 · Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from the "stomach flu" viruses that cause diarrhea and vomiting. Most people with the flu …
H1N1 flu (swine flu) - Symptoms and causes - Mayo Clinic
2023年3月23日 · The H1N1 flu, sometimes called swine flu, is a type of influenza A virus. During the 2009-10 flu season, a new H1N1 virus began causing illness in humans. It was often called swine flu and was a new combination of influenza viruses that infect pigs, birds and humans.
Viral gastroenteritis (stomach flu) - Symptoms & causes - Mayo …
2022年1月18日 · Although it's commonly called stomach flu, gastroenteritis isn't the same as influenza. The flu (influenza) affects only your respiratory system — your nose, throat and lungs. Gastroenteritis, on the other hand, attacks your intestines, causing signs and symptoms such as:
Bird flu (avian influenza) - Symptoms and causes - Mayo Clinic
2024年6月8日 · Bird flu, also called avian influenza, is caused by influenza type A virus infections in bird species. Depending on the strain, bird flu may cause the bird to have no symptoms, mild illness, serious illness or lead to the death of the bird. Bird flu rarely infects humans.
Facts about the flu - Mayo Clinic News Network
2020年11月17日 · Flu is a general term for seasonal influenza, which is a viral infection that attacks your respiratory system. Symptoms often come on suddenly and may seem like a cold at first, with a runny nose or congestion, sneezing and sore throat.
Coronavirus disease 2019 (COVID-19) - Symptoms and causes
Other infections, such as the flu and polio, can lead to long-term illness. But the virus that causes COVID-19 has only been studied since it began to spread in 2019. So, research into the specific effects of long-term COVID-19 symptoms continues.
COVID-19 vs. flu: Similarities and differences - Mayo Clinic
2023年7月22日 · COVID-19 is caused by a coronavirus called SARS-CoV-2, while flu is caused by influenza A and B viruses. COVID-19 and flu symptoms. Symptoms of COVID-19 and the flu appear at different times and have some differences. COVID-19 symptoms generally appear 2 to 14 days after exposure. Flu symptoms usually appear about 1 to 4 days after exposure ...
Norovirus: What to know and how to avoid it - Mayo Clinic News …
2024年12月31日 · The Centers for Disease Control and Prevention (CDC) says norovirus is the leading cause of vomiting and diarrhea from acute gastroenteritis in the U.S. Norovirus infection, sometimes referred to as stomach flu, is unrelated to the flu caused by the influenza virus.
Norovirus infection - Symptoms & causes - Mayo Clinic
2022年3月4日 · This highly contagious virus spreads through contaminated food, water or surfaces and causes vomiting and diarrhea. Learn ways to protect yourself.
Mpox (monkeypox): What is it and how can it be prevented?
2024年10月5日 · Mpox is an illness caused by the monkeypox virus. The virus can spread to humans from an animal host, such as rodents or nonhuman primates such as monkeys. The virus also can spread between people. In humans, mpox can cause flu-like symptoms and an itchy, painful rash. Treatment for most people with mpox is to relieve symptoms. There is an mpox ...