Influenza (flu) is a respiratory infection caused by a variety of flu viruses spread primarily by droplets made when infected people cough, sneeze, or talk.

2025年1月28日 · 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 …

Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms begin one to four (typically two) days after exposure to the virus and last for about two to eight days.

2024年9月6日 · A Weekly Influenza Surveillance Report Prepared by the Influenza Division. This system monitors visits for respiratory illness that includes fever plus a cough or sore throat, …

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There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease).

2025年3月7日 · Influenza (the flu) is a common, infectious virus spread by droplets that enter another person’s body. From there, the virus takes hold and begins to develop. Each year, the flu spreads across...

Flus: Created by Mikael Samuelsen, Yosef Wolde-Mariam, Patrick Ije Langseth. With Tobias Haile Furunes, Jon Ranes, Philip Nguyen, Herman Flesvig. Bæbs grows up among friends in the growing gang environment in Oslo in the 1990s, and is quickly drawn into unwanted situations with major consequences.

2023年12月30日 · Flu A and flu B are both types of influenza viruses, but they differ in terms of how common they are, who they tend to affect, and how hard they are to control. There are several differences between flu A and flu B: Both flu A and flu B can cause outbreaks and epidemics but only flu A causes pandemics.

2024年8月8日 · Influenza (flu) and the common cold are both contagious respiratory illnesses, but they are caused by different viruses. Flu is caused by influenza viruses only, whereas the common cold can be caused by a number of different viruses, including rhinoviruses, parainfluenza, and seasonal coronaviruses.