What to know
Testing is an additional prevention strategy that you can choose to assist in making decisions to further protect yourself and others.
An additional strategy to further protect yourself and others
Testing for respiratory viruses can help you decide what to do next, like getting treatment to reduce your risk of severe illness and taking steps to lower your chances of spreading a virus to others. There are various types of tests for respiratory virus infections. Antigen tests (“self-tests” or “rapid tests”) usually return results quickly (around 15 minutes). Nucleic acid amplification tests (NAATs), which include polymerase chain reaction (PCR) tests, are normally conducted by a healthcare provider. Although antigen tests are usually faster, they are not as good at detecting viruses as NAATs. This means that you might get a negative result with an antigen test, but actually be infected with the virus.
How it works
Tests can help you find out if you are currently infected with a certain respiratory virus. While testing doesn't change how likely you are to catch or spread respiratory viruses, or how severe your illness might be, it can provide useful information to help you make prevention or treatment choices.
Steps you can take
Individuals can
- Plan in advance of any illness so you can be ready to get tested quickly, particularly if you are someone who could benefit from treatment for respiratory viruses.
- Antigen tests can be used for screening before gathering with others, especially to help protect people in your life who have risk factors for severe illness. However, false negatives are possible; false positives are uncommon.
Order Your 4 Free At-home COVID-19 Tests
Every U.S. household is eligible to order 4 free at-home tests. Your order of COVID tests is completely free – you won't even pay for shipping. Want to know when your tests are coming? Sign up to receive email alerts when you order!
Organizations can
- Provide employees with paid time off to seek testing for respiratory viruses, as needed.
Key times for prevention
All of the prevention strategies described in this guidance can be helpful to reduce risk. They are especially helpful when:
- Respiratory viruses are causing a lot of illness in your community.
- You or the people around you were recently exposed to a respiratory virus, are sick, or are recovering.
- You or the people around you have risk factors for severe illness.
Notice
CDC offers separate, specific guidance for healthcare settings (COVID-19, flu, and general infection prevention and control). Federal civil rights laws may require reasonable modifications or reasonable accommodations in various circumstances. Nothing in this guidance is intended to detract from or supersede those laws.