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Covid Shots Worked Better for Obese Than Underweight in UK Study

A healthcare worker prepares a dose of the AstraZeneca Covid-19 vaccine in Epsom, UK.

A healthcare worker prepares a dose of the AstraZeneca Covid-19 vaccine in Epsom, UK.

Photographer: Dominic Lipinski/PA Wire/Bloomberg

People who are underweight or obese are most at risk of severe Covid, but a UK study found that two doses of vaccine still protect both groups well.

The researchers, who focused on patients at the two extremes of the body mass index scale, found that the shots worked slightly better for those at the high end of the measure in a study published in medical journal The Lancet Diabetes & Endocrinology on Friday.