New lab experiments from Japan show that BA.2 may have features that make it as capable of causing serious illness as older variants of Covid-19, including Delta. The findings were posted as a preprint study on the bioRxiv server, before peer review.
The BA.2 virus -- a subvariant of the Omicron coronavirus variant -- isn't just spreading faster than its distant cousin, it may also cause more severe disease and appears capable of thwarting some of the key weapons we have against Covid-19, new research suggests.
New lab experiments from Japan show that BA.2 may have features that make it as capable of causing serious illness as older variants of Covid-19, including Delta. And like Omicron, it appears to largely escape the immunity created by vaccines. A booster shot restores protection, making illness after infection about 74% less likely.BA.2 is also resistant to some treatments, including sotrovimab, the monoclonal antibody that's currently being used against Omicron. Dr.
The virus matters, she says, but as its would-be hosts, so do we."Our immune system is evolving as well. And so that's pushing back on things," she said.Right now, she says, we're in a race against the virus, and the key question is, who's in the lead?"What we will ultimately want is to have the host be ahead of the virus.
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