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3 paź 2023 · 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 treatment. Influenza spreads easily between people when they cough or sneeze. Vaccination is the best way to prevent the disease.
13 maj 2010 · Human influenza viruses belong to the Orthomyxoviridae family, which consists of the genera influenza A, B, and C virus, thogotovirus (carried by ticks, and infecting humans), and isavirus (infecting fish), as well as of a few other, newly described arboviruses.
18 wrz 2024 · 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.
There are four types of influenza viruses: A, B, C, and D. Influenza A and B tend to spread between people around the world each year. In contrast, influenza C and D mainly infect birds and other animals.
Seasonal influenza virus circulation declined markedly in 2020–21 after SARS-CoV-2 emerged but increased in 2021–22. Most people with influenza have abrupt onset of respiratory symptoms and myalgia with or without fever and recover within 1 week, but some can experience severe or fatal complications.
27 lis 2009 · Symptoms. Influenza is characterized by a sudden onset of high fever, cough, headache, muscle and joint pain, malaise, and a runny nose lasting 2 to 7 days. Influenza is usually mild and uncomplicated and most people recover without medical treatment.
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 get better on their own.
