What Do You Think? Answers! 

Janssen COVID-19 Vaccine is administered as a 2-dose series. 



Answer: False. Janssen COVID-19 Vaccine is the first authorized vaccine that only requires ONE dose.

Janssen COVID-19 Vaccine should not be used with any other COVID-19 vaccine regimen.



Answer: True. There are no available data on the interchangeability of the Janssen COVID-19 Vaccine with other COVID-19 vaccines. One dose can be administered to persons who have not yet received any COVID-19 vaccine.

Administer 0.3 mL of vaccine by intramuscular injection.



Answer: False. The correct dosage (amount) is 0.5 mL. Administer the vaccine by intramuscular (IM) injection in the deltoid muscle of the arm.



Page last reviewed: August 23, 2021