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