New Norwegian Public Health study that examined face mask wearing and Covid-19 positivity finds “higher incidence of testing positive for COVID-19 in the groups that used face masks more frequently.”

You can review the study at the link below.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/0525AD535D10FDCDF0C52603B50E7A1E/S0950268823001826a.pdf