The BA.5 subvariant can evade protection, but there are still tools to combat it
A highly transmissible variant of the coronavirus is spreading across Canada, causing another wave of infections, even among those who have recently recovered from COVID-19. The Omicron BA.5 subvariant, and to a lesser extent BA.4, is largely behind the latest wave: the seventh since the pandemic and the third since the arrival of Omicron. Both …
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