flu strain
Influenza virus type
A flu strain is a specific genetic variant of the influenza virus.
The flu mutates constantly, producing new strains that may evade immunity from previous infections or vaccines: This year's vaccine targets three different flu strains.
Major outbreaks often get named for their strain: H1N1, H3N2.
Health officials track circulating strains to update annual vaccines.
- virusMicroscopic infectious agent
- mutationPermanent DNA alteration
- outbreakSudden eruption of trouble
- going aroundMoving in orbit
- H1N1Influenza A subtype
epidemic · pandemic · public health · vaccine · contagious · fever · symptoms · variant · seasonal · avian · swine · spreading · infection · cough · runny nose · body aches · aches · chills
flu strainflu vaccine
Injection preventing influenza
influenza vaccine · flu shot · Tamiflu · immunity · antibodies
flu strainbacterial infection
Illness from harmful microorganisms
fungal infection · parasitic infection · prion disease · genetic disorder
flu, strain, flus, strains, strained, straining, strainer, strainers, constrain