COVID. A similar study was again conducted once again after the jabs came into the picture. It pointed out, underweight individuals also carry the risk of severe disease.
The experts said, early findings on the people most at risk were used to support policies that prioritised certain groups of people for vaccination.
This included people with a BMI of 40 or above. People in the range of 18.5–25 are considered healthy weight. There are also studies that showed some vaccines work less well in people with obesity, although we don’t fully understand the reasons for this.
To investigate vaccine effectiveness across different body weights, we looked at the risk of severe COVID outcomes (such as hospitalisation and death) across the full BMI range.