April 25, 2022
This message includes updates on the COVID-19 response from CDC. The COVID-19 Outbreak is a rapidly evolving situation and information will be updated as it becomes available.
COVID-19 Vaccines for People Vaccinated Outside the United States
For the best protection, CDC recommends everyone stay up to date with COVID-19 vaccines, including people who received a COVID-19 vaccine outside of the United States. A person is up to date with their COVID-19 vaccination if they have received all recommended doses in the primary series and one booster when eligible.
Specific recommendations for people vaccinated outside of the United States depend on whether:
For people who received an accepted COVID-19 vaccine outside the United States, the next step is to determine if they completed the primary series or not.
People vaccinated outside of the United States completed the primary series if they:
People vaccinated outside of the United States who completed the primary series should receive a booster when eligible.
People vaccinated outside of the United States who have not completed the primary series as described above do not have to start the primary series over. They should get one primary series dose of an mRNA COVID-19 vaccine (Pfizer-BioNTech or Moderna). If the first dose was an mRNA COVID-19 vaccine, it would be best to get the same vaccine again to complete the primary series. They should also receive a booster when eligible.
*CDC does not recommend mixing different COVID-19 vaccines for the primary series but is aware that this is increasingly common in many countries outside of the United States. Therefore, for the interpretation of vaccination records, people who received a mixed primary series have completed the primary series.
Quarantine and Isolation Calculator FAQ
CDC Quarantine and Isolation Calculator is a tool to help people who have been in close contact with someone with COVID-19 or have COVID-19 to determine if they need to isolate, quarantine, or take other steps to prevent spreading COVID-19.
To use the tool:
Answers to frequently asked questions about the Quarantine and Isolation Calculator are available for those who want to learn more about the tool.
COVID-19 Vaccines for People Who Would Like to Have a Baby
COVID-19 vaccination is recommended for people who are trying to get pregnant now or might become pregnant in the future, as well as their partners.
People who are trying to get pregnant now or might become pregnant in the future should stay up to date with their COVID-19 vaccines, including getting a COVID-19 booster shot when it’s time to get one.
There is currently no evidence that any vaccines, including COVID-19 vaccines, cause fertility problems (problems trying to get pregnant) in women or men.
COVID-19 can make you very sick during pregnancy. Additionally, if you have COVID-19 during pregnancy, you are at increased risk of complications that can affect your pregnancy and developing baby.
Evidence continues to grow showing that COVID-19 vaccination is safe and effective during pregnancy. Learn more by visiting COVID-19 Vaccines While Pregnant or Breastfeeding.
COVID-19 vaccines are undergoing the most intense safety monitoring in U.S. history. Data continue to accumulate and show that COVID-19 vaccines are safe and effective for use before and during pregnancy.
COVID Data Tracker Weekly Review
Throughout the pandemic, the U.S. has experienced waves of COVID-19 caused by different variants. CDC closely tracks variant trends and their impact on public health.