Abstract
  
  Question: Should Janssen COVID-19 vaccine be recommended for persons 18 years of age and older in the U.S. under an Emergency Use Authorization?
Population: Persons 18 years of age and older
Intervention: Janssen COVID-19 vaccine (5 × 1010 viral particles, single 0.5 ml dose IM)
Comparison: No COVID-19 vaccine
Outcomes:
- Symptomatic laboratory-confirmed COVID-19
 - Hospitalization due to COVID-19
 - All-cause death
 - SARS-CoV-2 seroconversion to a non-spike protein
 - Asymptomatic SARS-CoV-2 infection
 - Serious adverse events
 - Reactogenicity grade ≥3
 
        Background paper
  Americas
  United States of America
  Janssen COVID-19 Vaccine
  EtR framework
  COVID-19