- Covid-19 Live Updates: China, Omicron and Vaccine NewsThe New York Times
- Covid-19 booster raises antibody levels against Omicron for children ages 5 through 11, Pfizer and BioNTech sayCNN
- Pfizer/BioNTech say booster dose increases protection against Omicron in kids aged 5-11Reuters
- COVID-19 tracker: Pfizer targets variant-specific vaccine by fallFiercePharma