US study finds households with recent birthdays about 30% more likely to have positive diagnosis
Households with recent birthdays were more likely to test positive with Covid in areas with high infection rates, according to an analysis of nearly 3m homes in the US.
The study, which emanates from health insurance claims data collected in the first 45 weeks of 2020 across the country, was designed to assess the potential risk of small gatherings on the spread of Covid-19.
