The SARS-CoV-2 Omicron variant rapidly became the dominant
strain worldwide. Compared to earlier variants, it carries numerous mutations
in the spike protein, affecting both viral entry and recognition by the immune
system.

Which of the following best explains a key factor
contributing to Omicron’s rapid spread?

Question

The SARS-CoV-2 Omicron variant rapidly became the dominant
strain worldwide. Compared to earlier variants, it carries numerous mutations
in the spike protein, affecting both viral entry and recognition by the immune
system.

Which of the following best explains a key factor
contributing to Omicron’s rapid spread?

Accepted Answer

Mutations
in the spike protein allowed infection via ACE2 but eliminated the need for
TMPRSS2

Answer

T-cell
immunity from previous variants was completely ineffective against Omicron

Answer

Mutations
in the spike protein allowed more efficient infection of lung cells by
interacting with both ACE2 and TMPRSS2

Answer

Pre-existing
immunity from prior infection or vaccination was evaded, allowing the virus to
infect people who were previously protected

Crowdly

The SARS-CoV-2 Omicron variant rapidly became the dominant strain worldwide. Co...

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