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New COVID variants can evade vaccine protections

Variants of the COVID virus continue to challenge scientists

The recent evolution of the virus is markedly different to what we saw earlier in the pandemic. Source: Getty / BlackJack3D

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The new omicron variants BA.4 and BA.5, which appear to have milder symptoms than the alpha and delta, are still a source of concern.

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New COVID variants can evade vaccine protections | SBS News