https://www.cdc.gov/mmwr/volumes/69/wr/mm6928e2.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6928e2.htm Tl;dr: When both parties wear marks, both cloth and N95

https://www.cdc.gov/mmwr/volumes/69/wr/mm6928e2.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6928e2.htm Tl;dr: When both parties wear marks, both cloth and N95 masks are likely sufficient for mitigating infections in enclosed spaces.