Lesson 22: Orthomyxoviridae

Question 1

The Orthomyxoviridae is a family of RNA viruses, which includes five genera:

Answer 1

 Influenzavirus A,
 Influenzavirus B,
 Influenzavirus C,
 Isavirus, and
 Thogotovirus

Question 2

The Orthomyxoviridae is a family of RNA viruses, which includes five genera:
 Influenzavirus A,
 Influenzavirus B,
 Influenzavirus C,
 Isavirus, and
 Thogotovirus.
 All these viruses were grouped under ________ (myxa meaning mucus) due to
their affinity to mucins.

Answer 2

myxovirus

Question 3

Orthomyxoviridae

Answer 3

A novel genus of this family has been recently identified, which includes
Quaranfil, Johnston Atoll, and Lake Chad viruses.
 Viruses in the first three genera, which are identified by antigenic differences in
their nucleoprotein (NP) and matrix (M) proteins, cause influenza disease in
vertebrates, including birds, humans, and other mammalian species.
 The genus Orthomyxovirus includes influenza viruses, the causative agents of
worldwide epidemics of influenza.