🦠microbiology review

Avian influenza virus A

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Avian Influenza Virus A is a subtype of the influenza virus that primarily infects birds but can also affect humans and other animals. It is known for causing severe respiratory disease and has pandemic potential.

5 Must Know Facts For Your Next Test

  1. Avian Influenza Virus A is primarily transmitted through direct contact with infected birds or contaminated environments.
  2. The virus can mutate rapidly, allowing it to cross species barriers and potentially infect humans.
  3. There are multiple subtypes of Avian Influenza Virus A, including H5N1 and H7N9, which have caused human outbreaks.
  4. Symptoms in humans can range from mild respiratory issues to severe pneumonia and even death.
  5. Preventive measures include surveillance of bird populations, culling infected birds, and biosecurity practices in poultry farms.

Review Questions