AstraZeneca COVID-19 vaccine
The WHO Strategic Advisory Group of Experts on Immunization (SAGE) has issued interim recommendations for use of the Oxford/AstraZeneca COVID-19 vaccine (AZD1222).
Who should be vaccinated first?
While vaccine supplies are limited, it is recommended that priority be given to health workers at high risk of exposure and older people, including those aged 65 or older.
Who is the vaccine not recommended for?
People with a history of severe allergic reaction to any component of the vaccine should not take it.
The vaccine is not recommended for persons younger than 18 years of age pending the results of further studies.
What’s the recommended dosage?
The recommended dosage is two doses given intramuscularly (0.5ml each) with an interval of 8 to 12 weeks.
Additional research is needed to understand longer-term potential protection after a single dose.
How efficacious is the vaccine?
The AZD1222 vaccine against COVID-19 has an efficacy of 63.09% against symptomatic SARS-CoV-2 infection.
Longer dose intervals within the 8 to 12 weeks range are associated with greater vaccine efficacy.