Influenza C virus

Definition

Influenza C virus is a type of influenza virus that primarily infects humans and swine. It generally causes mild respiratory illness and is less common than Influenza A and B viruses.

5 Must Know Facts For Your Next Test

1. Influenza C virus has a single-stranded RNA genome.
2. It is less likely to cause epidemics compared to Influenza A and B.
3. Humans of all ages can be infected, but it often affects children more severely.
4. The virus lacks the neuraminidase (NA) protein found in Influenza A and B, instead having a hemagglutinin-esterase-fusion (HEF) protein.
5. Reinfection with Influenza C can occur throughout life due to limited immunity.

Related terms

Influenza A virus: A type of influenza virus known for causing pandemics and having multiple subtypes due to antigenic variation.

Influenza B virus:

Another common type of influenza virus that typically causes seasonal outbreaks but no pandemics.

Hemagglutinin-Esterase-Fusion (HEF) protein: A multifunctional glycoprotein found on the surface of Influenza C viruses responsible for both receptor binding and fusion activities.