COVID-19 viral vector vaccine (Janssen)
Indications
COVID-19 Disease Prevention
Adult Dose
Emergency use authorization (EUA) issued by FDA for active immunization to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals aged >18 years
injection, suspension
5x1010 virus particles/0.5mL (5 doses per vial)
0.5 mL IM as a single dose
Child Dose
<18 years: Safety and efficacy not established
Contra Indications
Known history of severe allergic reaction (eg, anaphylaxis) to any component in vaccine
Precautions
Immunocompromised persons, including individuals receiving immunosuppressant therapy, may have diminished immune response to the vaccine
Vaccine may not protect all vaccine recipients
Pregnancy-Lactation
Not Classi
Pregnancy
Data are insufficient to inform of vaccine-associated risks in pregnancy
Lactation
Data are not available to assess effects on breastfed infants or on milk production/excretion
Adverse Effects
>10%
7 days post vaccination; aged 18-59 yr
Injection site pain (58.6%)
Headache (44.4%)
Fatigue (43.8%)
Myalgia (39.1%)
Use of antipyretic or pain medication (26.4%)
Nausea (15.5%)
Fever (12.8%)
7 days post vaccination; aged >60 yr
Injection site pain (33.3%)
Headache (30.4%)
Fatigue (29.7%)
Myalgia (24%)
Nausea (12.3%)
1-10%
7 days post vaccination; aged 18-59 yr
Injection site erythema (9%)
Injection site swelling (7%)
Myalgia, Grade 3 (1.4%)
Fatigue, Grade 3 (1.2%)
7 days post vaccination; aged >60 yr
Use of antipyretic or pain medication (9.8%)
Injection site erythema (4.6%)
Fever (3.1%)
Injection site swelling (2.7%)
Mechanism of Action
Vaccine is composed of a recombinant, replication-incompetent human adenovirus type 26 vector that after entering human cells, expresses the SARS-CoV-2 spike (S) antigen without virus propagation
An immune response elicited to the S antigen protects against COVID-19