- When to perform confirmatory PCR tests:
- Asymptomatic people who test antigen positive should have a confirmatory test performed.
- Symptomatic people who test antigen negative should have a confirmatory test performed.
- What to do with discordant results.
- Added new variables to the decision-making process (outbreak, close contact or no outbreak).
- Provided additional guidance on infection control measures to take in response to test results.
Facilities should adhere to this new guidance when using antigen tests.