A large randomized community-based trial in which 4862 healthy participants were divided into a group wearing medical/surgical masks and a control group found no difference in infection with SARS-CoV-2 (76)
Here is the study: https://apps.who.int/iris/rest/bitstreams/1319378/retrieve
my one disproves yours
you have yet to refute it or provide a method to PROVE YOU'RE HEALTHY
you're a moron