Here’s what we know about the risks of serious side effects from COVID-19 vaccines
Risks of rare allergic reactions, blood clots and maybe heart problems don’t outweigh benefits
![photo of six or so people in Grand Central Station wearing facemasks. a woman in the center takes a selfie](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/05/052821_ti_covid-side-effects_feat.jpg?fit=1030%2C580&ssl=1)
As efforts to get more people vaccinated ramp up, health officials are keeping an eye out for side effects. Here, people take selfies after being vaccinated May 12 at Grand Central Terminal in New York City, where getting jabbed came with a free metro pass.
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