A new research, which stresses the importance of sleep in the vaccination effort, has found that people with less than six hours of sleep per night in the days surrounding Covid-19 vaccination can have a weakened antibody response. A team led by researchers at the University of Chicago and the French National Institute of Health and Medical Research (Inserm) conducted a meta-analysis which examined the impact of sleep duration on vaccination against viral illnesses such as influenza and hepatitis.

Using the results they compared it to known data on the antibody response to the Pfizer-BioNTech Covid-19 vaccine. They found that the weakened antibody response in those with shortened sleep was so profound, it was similar to the decline in Covid-19 antibodies two months following the vaccination.