Influenza

Influenza (the flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year. Every year in the United States, on average 5% to 20% of the population gets the flu; more than 200,000 people are hospitalized from flu complications, and; about 36,000 people die from flu-related causes. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications.
Types of Influenza

Influenza is caused by three types of RNA viruses called influenza types A, B and C, which all belong to the family Orthomyxoviridae.

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Overview

Feature Articles

Latest Influenza News and Research

Only 9% of older Americans vaccinated against RSV, study finds

Only 9% of older Americans vaccinated against RSV, study finds

Newly identified antibodies target a hard-to-spot region of the influenza virus

Newly identified antibodies target a hard-to-spot region of the influenza virus

Latest COVID-19 booster halves risk of moderate or severe disease in adults

Latest COVID-19 booster halves risk of moderate or severe disease in adults

U.S. flu vaccines expected to shift from quadrivalent to trivalent, researcher says

U.S. flu vaccines expected to shift from quadrivalent to trivalent, researcher says

H5N1 variant spreads between species, endangering wildlife

H5N1 variant spreads between species, endangering wildlife

Scientists uncover a new doorway for SARS-CoV-2 into human cells

Scientists uncover a new doorway for SARS-CoV-2 into human cells

Study finds October-born kids less likely to catch flu post-vaccination

Study finds October-born kids less likely to catch flu post-vaccination

Study reveals BCG vaccine's unexpected role in fighting influenza

Study reveals BCG vaccine's unexpected role in fighting influenza

Healthcare leaders advocate for restoring Canada's hypertension control program

Healthcare leaders advocate for restoring Canada's hypertension control program

Researchers develop promising recombinant flu vaccine using nanoliposome technology

Researchers develop promising recombinant flu vaccine using nanoliposome technology

Global health boost as new vaccine SKYTyphoid gains WHO prequalification

Global health boost as new vaccine SKYTyphoid gains WHO prequalification

October found to be the optimum time to vaccinate against influenza

October found to be the optimum time to vaccinate against influenza

October births linked to higher flu vaccination and lower diagnosis rates

October births linked to higher flu vaccination and lower diagnosis rates

CDC studies show effectiveness of flu vaccines across all age groups

CDC studies show effectiveness of flu vaccines across all age groups

Virginia Tech receives grant for improving rural wastewater pathogen detection

Virginia Tech receives grant for improving rural wastewater pathogen detection

Rising mammal infections signal alarm for potential H5N1 pandemic

Rising mammal infections signal alarm for potential H5N1 pandemic

Fluid-filled lung sac found to be the hub for virus-eating cells

Fluid-filled lung sac found to be the hub for virus-eating cells

New study finds 4’-fluorouridine effective against avian influenza in vitro and in vivo

New study finds 4’-fluorouridine effective against avian influenza in vitro and in vivo

Vaccines safe for pregnant women with HIV but show reduced immune response

Vaccines safe for pregnant women with HIV but show reduced immune response

COVID-19 linked to higher dementia risk in older adults, study finds

COVID-19 linked to higher dementia risk in older adults, study finds