The #COVID19 vaccines developed are highly effective at preventing disease in real-world conditions, and research suggests they should maintain their effectiveness over time. What remains unclear is exactly how long the vaccines confer immunity, if vaccines will need to be tweaked to fight emerging #coronavirus variants, and if booster shots maybe needed later.
Here's what we know so far.
https://nymag.com/intelligencer/2021/04/how-long-does-the-covid-vaccine-last.html
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