New COVID variants can evade vaccine protections
![Variants of the COVID virus continue to challenge scientists](https://assets.product.qa.sbs.com.au/dims4/default/873938a/2147483647/strip/true/crop/1600x900+100+0/resize/1280x720!/quality/90/?url=https%3A%2F%2Fsbs-au-brightspot.s3.amazonaws.com%2Fb7%2Fa5%2Fdcbf067e4463a8929e72d7daad5b%2Fvariants-of-the-covid-virus-continue-to-challenge-scientists-getty.jpg&imwidth=1280)
The recent evolution of the virus is markedly different to what we saw earlier in the pandemic. Source: Getty / BlackJack3D
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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