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The message from Israel is clear: Covid booster shots should be standard

The biology of Sars-CoV-2 immunity, however, is the same whether you’re in Tel Aviv, Tokyo or Toronto. The pioneering Israeli work of making third doses the standard provides an instructive template for other countries to follow as quickly as possible, while also ensuring that this becomes the global standard of vaccination for everyone, no matter where they live.

-David O’Connor is professor of pathology and laboratory medicine at the University of Wisconsin