Can you tell a Perfect Enemy? | Page 1341 | theperfectenemy.com
September 11, 2025

Effectiveness of a COVID-19 Additional Primary or Booster Vaccine Dose in Preventing SARS-CoV-2 Infection Among Nursing Home Residents During Widespread Circulation of the Omicron Variant — United States, February 14–March 27, 2022 | MMWR – cdc.gov