Why has Norway’s public health system come to such a different conclusion than the CDC?
For that matter, why have they come to such a different conclusion than Governor Wolf and Dr. Levine?
“Norway’s Institute for Public Health reported that if masks did work then any difference in infection rates would be small when infection rates are low: assuming 20% asymptomatics and a risk reduction of 40% for wearing masks, 200 000 people would need to wear one to prevent one new infection per week.”
https://www.cebm.net/covid-19/masking-lack-of-evidence-with-politics/