evidence: CDC recommends that people who are fully vaccinated against COVID-19 can safely gather with other fully vaccinated people indoors without masks and without socially distancing. [...] A CDC study finds that mRNA COVID-19 vaccines, Pfizer-BioNTech and Moderna, are highly effective at preventing infection with the SARS-CoV-2 virus in real-world conditions among healthcare personnel, first responders, and other essential workers (groups that are more likely than the general population to be exposed to the virus because of their occupations), reducing their risk of infection by 90%. [...] CDC releases data in two MMWRs showing that adults who received 3 doses of a COVID-19 mRNA vaccine were 94% less likely to be put on a ventilator or die from COVID-19 during the Omicron surge compared to non-vaccinated adults in the U.S. and that Black adults are currently 4 times more likely to be hospitalized than White adults.