If it was not possible to establish a clear link between school class surges and infection rates in 2 years, then there is no link. The CDC does have a list on

If it was not possible to establish a clear link between school class surges and infection rates in 2 years, then there is no link. The CDC does have a list on which places transmit the virus and restaurants/cafe/bar/dancing/... were 3 of the top 5 entries if memory serves. The remaining 2 were hospitals and doctors’ offices. Many places that people think would spread the virus don’t. For example anything outside is very safe, as are swimming pools. Outside it takes rock concert like crowd densities before clusters form. Viruses cannot deal, even for milliseconds, with uv light or rapid temperature changes and many places are already hardened against infection, and therefore quite safe, even with many people without face masks. Again, there’s a density limit, but it’s pretty high. One study did point out that risks in school and hospital settings are closely related to the quality of the ventilation system. And yet, I haven’t read even once about attempts to identify substandard facilities for kids/patients or money for improving them being allocated. And obviously, all data suggests smaller classes drastically reduce risk. Can’t find the list but here’s a study. Schools are not mentioned. Restaurants and any setting with on-site eating or drinking are the big vectors of infection it seems. https://www.cdc.gov/mmwr/volumes/69/wr/mm6936a5.htm https://www.cdc.gov/mmwr/volumes/69/wr/mm6936a5.htm