See the "Key Things to Know About COVID-19 Vaccines" from Centers for Disease Control and Prevention (CDC).
One's risk of becoming infected can depend on the stage people are in with their vaccination program. CDC states that:
People are considered fully vaccinated:
- 2 weeks after their second dose in a 2-dose series, such as the Pfizer or Moderna vaccines, or
- 2 weeks after a single-dose vaccine, such as Johnson & Johnson’s Janssen vaccine
If you don’t meet these requirements, you are NOT fully vaccinated. Keep taking all precautions until you are fully vaccinated.