Reassortment between avian and human influenza viruses
generates a new subtype with a haemagglutinin to which humans lack immunity.
The new virus transmits efficiently with no intrinsic fitness cost.

What is the most likely long‑term consequence following introduction
into humans?

Question

Reassortment between avian and human influenza viruses
generates a new subtype with a haemagglutinin to which humans lack immunity.
The new virus transmits efficiently with no intrinsic fitness cost.

What is the most likely long‑term consequence following introduction
into humans?

Accepted Answer

Rapid
dominance of the new subtype over existing strains

Answer

Stable
coexistence with previous subtypes at low prevalence

Answer

Elimination
of the virus following initial outbreaks

Answer

Restriction
of transmission to animal reservoirs

Crowdly

Reassortment between avian and human influenza viruses generates a new subtype ...

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