Later today @rkfmiller will present a study on school masking for #COVID, showing that a 10% increase in kids wearing masks was associated with about a 50% decrease in the likelihood of detecting SARS-CoV-2 in wastewater from schools. #CROI2023 1/ 
Interesting thing about this study is they sent people to observe actual mask use during school pickup (about 40% of kids wore them) rather than focusing on mask policies or requests to wear them. 2/
.@rkfmiller: "These were 7 year-olds wearing masks their moms bought at Target" & they still saw an effect. "It can be effective even with real-world masking strategies. It doesn’t have to be all-or-nothing -- even small amount helps." #CROI2023 3/
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