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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.
A 2021 study found the common flu vaccine provided immunity to the flu in 58% of recipients. [6] The measles vaccine fails to provide immunity to 2% of children that receive the vaccine. However, if herd immunity exists, it typically prevents individuals who are ineffectively vaccinated from contracting the disease. [7]
Flu shot immunity lasts about eight months, and by next year, the shot will have a new set of variants to reflect the evolving viruses. Like Covid-19 vaccines, flu vaccines are good at preventing ...
Influenza-like illness (ILI), also known as flu-like syndrome or flu-like symptoms, is a medical diagnosis of possible influenza or other illness causing a set of common symptoms. These include fever, shivering , chills , malaise , dry cough , loss of appetite , body aches, nausea , and sneezing typically in connection with a sudden onset of ...
The flu season is an important time to ensure you’re washing your hands properly because you cannot count on these public surfaces being cleaned after every person."
“The flu shot can make people feel a little run down the next day," Dr. Yancey. "It sounds mean to say it but that is a good thing, the fever and achiness is a marker of a nice brisk immune ...
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza (flu). The season occurs during the cold half of the year in each hemisphere . It takes approximately two days to show symptoms.
Innate immune defenses are non-specific, meaning these systems respond to pathogens in a generic way. [19] This system does not confer long-lasting immunity against a pathogen. The innate immune system is the dominant system of host defense in most organisms, [ 2 ] and the only one in plants.