Health experts say that while the Bay Area will likely end up with 80% of its population vaccinated against COVID-19, the United States is unlikely to reach herd immunity, a threshold where a high enough percentage of the population is inoculated against the coronavirus to essentially end its spread. Half of the adults in the U.S. have been inoculated with at least one dose, but daily vaccination rates have been dropping. We’ll talk about what this means for the future of the COVID-19 pandemic.

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