The BA.5 subvariant has become the dominant version of Covid-19 in the U.S. and mixed signals from other countries it hit earlier have raised some concerns. Here’s what we know so far.
The subvariant has become the dominant Omicron strain in the U.S. and is driving up cases in North America and Europe
If you’ve had Covid before, why can you get it again? WSJ’s Daniela Hernandez explains what the possibility of reinfections means for the future of public-health policy and the Covid-19 pandemic. Illustration: David FangBA.5 is one of many Covid-19 Omicron subvariants to emerge since last winter. The subvariant is driving up cases in parts of Europe and North America and has become the dominant U.S. Omicron strain.
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