influenza virus

Causes seasonal flu

The influenza virus causes flu, an acute respiratory infection marked by fever, body aches, and fatigue.

These viruses mutate rapidly, which is why new flu vaccines are developed each season and why pandemic strains emerge periodically.

Types A and B cause seasonal outbreaks in humans; type A is responsible for pandemics like the 1918 Spanish flu.

Opposites
pathogen type

influenza virusbacterium

Single-celled prokaryotic life

bacteria · E. coli · fungus · prion · bacterial infection

health state

influenza viruswellness

Overall state of health

cure · remedy · good health · medicine · antiviral

biological agent effect

influenza virusprobiotic

Healthful live microorganism supplement

beneficial bacteria · immune system · gut flora · microbiome · vaccine

Family

virus, virulent, viruses, influenza, antivirus, virulence, antiviral, virulently, retrovirus

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G