Typical dosage for Janssen
- Primary vaccination: The typical dose is a one-time injection of 0.5 mL into the muscle.
- Booster: If you've received Janssen COVID-19 Vaccine, you can choose this vaccine as a booster if it's been at least 2 months since your primary dose. The typical dose is a one-time injection of 0.5 mL into the muscle.
Other Janssen articles
