“For people eager to put the health crisis behind them, the relief of being vaccinated is being replaced by a new worry. Is immunity a ticking clock? Should they plan a family wedding this fall? Are people locked into the same brand or vaccine technology for their next shot?” The Post’s Carolyn Y. Johnson writes. “Scientists know that vaccine-induced immunity against most diseases wanes, but the answers to those questions about the coronavirus will begin to coalesce only in the coming weeks and months.”

Source: Washington Post May 28, 2021 12:22 UTC