Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

COVID-19 Vaccination and Other Medical Procedures

COVID-19 Vaccination and Other Medical Procedures

Things to Remember When Visiting Your Healthcare Provider

  • When visiting your healthcare provider, you should follow CDC recommendations to protect yourself and others from COVID-19.
  • At this time, CDC recommends that everyone in a healthcare setting wear a mask and practice physical distancing.
  • If you are recommended to be in isolation or quarantine, you should not visit your healthcare provider for routine medical procedures or screenings.
  • Before your appointment, it is okay to ask if your healthcare provider is vaccinated or if the healthcare facility requires COVID-19 vaccines for staff.

Routine Medical Procedures and Screenings

Most routine medical procedures or screenings can be performed before or after getting a COVID-19 vaccine. These can include:

  • Routine blood work
  • Dental procedures
  • CT scans (also known as CAT scans or computed tomography), with or without IV contrast dye
  • EKGs (also known as ECGs or electrocardiograms)
  • Cardiac stress tests (also known as exercise tolerance tests or treadmill tests), with or without radiographic dye
  • Colonoscopies
  • Ultrasounds
  • Other medical screening exams

Talk to your doctor if you have any questions or concerns about getting vaccinated before or after routine medical procedures or screenings.


If you are due for a mammogram and have been recently vaccinated for COVID-19, ask your doctor how long you should wait after vaccination to get your mammogram. People who have received a COVID-19 vaccine can have swelling in the lymph nodes (lymphadenopathy) in the underarm near where they got the shot. This is more common after booster or additional doses than after the primary vaccination series.

This swelling is a normal sign that your body is building protection against COVID-19. However, it is possible that this swelling could cause a false reading on a mammogram. Some experts recommend getting your mammogram before being vaccinated or waiting four to six weeks after getting your vaccine.

Surgeries, Hospitalizations, or Anesthesia

If you are planning to have a medical procedure or screening, ask your doctor about how and when to get a COVID-19 vaccine before your procedure or screening to help protect yourself and others. You may also have the opportunity to get a COVID-19 vaccine before you leave the healthcare facility after your procedure or screening is complete. Your doctor will help you decide when to be vaccinated to make sure the benefits of vaccination outweigh potential risks.

For Healthcare Professionals

Interim Clinical Considerations with additional information for healthcare providers and public health officials on use of COVID-19 vaccines.

For other questions, see all COVID-19 clinical resources.