I received a COVID-19 vaccination. Should I be tested to determine if the vaccination was effective?

January 6, 2021

This information has been archived. Some or all of the information below is no longer accurate.

No. At this point, there is no recommendation for serology testing after vaccination.

Although the COVID vaccines are very effective and induce immunity in most people, there are several factors that mean we will need to continue following preventive "non-pharmaceutical interventions" (NPIs) (physical distancing, face coverings, frequency hand washing).

Practicing NPIs, even after you are vaccinated, helps protect you and others: 

  • if there is a vaccine failure, which may occur in a very small percentage of recipients;
  • if there is incomplete immunity;
  • because you may potentially be able to still catch and transmit the virus, even if you are immune;
  • if immunity wanes over time.