Viral particles are released from a dying cell infected with the coronavirus. Image: Elizabeth Fischer/KHN via TNS
Viral particles are released from a dying cell infected with the coronavirus. Image: Elizabeth Fischer/KHN via TNS

WHO tracking two new Omicron coronavirus subvariants

  • The UN health body is seeking to assess if the BA.4 and BA.5 strains are more infectious or dangerous
  • These sister variants have ‘additional mutations that need to be further studied to understand their impact on immune escape potential’

Viral particles are released from a dying cell infected with the coronavirus. Image: Elizabeth Fischer/KHN via TNS
Viral particles are released from a dying cell infected with the coronavirus. Image: Elizabeth Fischer/KHN via TNS
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