Covid and birthdays
mercredi 23 juin 2021 à 02:00* US study finds households with recent birthdays about 30% more likely to have positive diagnosis [for Covid-19].*
The effect is strongest for children's birthdays. It appears that birthday parties are spreading the disease, and suggests that children are playing a significant role in the spreading.
The study covered most of 2020. It will be interesting to see what happens in the second half of 2021.