1. Evaluating vaccine effectiveness against Omicron BA.5 and BA.2 in Portugal  News-Medical.Net
  2. Vaccine effectiveness of two-dose BNT162b2 against symptomatic and severe COVID-19 among adolescents in Brazil and Scotland over time: a test-negative case-control study  The Lancet
  3. Covid-19: gloomy forecasting and vaccine promotion return  Portugal Resident
  4. What is the vaccine effectiveness of BNT162b2 against Omicron in five to 11-year-olds?  News-Medical.Net
  5. View Full coverage on Google News

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