NEWS Coronavirus News Vaccinated People Should Get Tested if Exposed to COVID-19, CDC Says By Claire Wolters Claire Wolters Twitter Claire Wolters is a staff reporter covering health news for Verywell. Learn about our editorial process Updated on July 29, 2021 Fact checked by Angela Underwood Fact checked by Angela Underwood LinkedIn Angela Underwood's extensive local, state, and federal healthcare and environmental news coverage includes 911 first-responder compensation policy to the Ciba-Geigy water contamination case in Toms River, NJ. Her additional health-related coverage includes death and dying, skin care, and autism spectrum disorder. Learn about our editorial process Share Tweet Email Print Delly Carr / Swimming Australia / Getty Images Key Takeaways The CDC is advising people who are fully vaccinated to get tested if they are exposed to someone who may have COVID-19, even if they display no symptoms.These people should resume mask-wearing in public indoor spaces, wait three to five days after exposure before getting tested, and quarantine for 10 days if testing positive.Experts say testing is important in detecting and stopping asymptomatic spread. The Centers for Disease Control and Prevention (CDC) reversed its previous guidelines, now recommending that vaccinated people should get tested if they come into contact with someone who may have COVID-19, even if they show no symptoms. On Tuesday, the agency also updated its mask guidance, urging fully vaccinated people in areas with high or substantial COVID-19 transmission rates to resume wearing masks. The new recommendations come amid reports of breakthrough infections from the Delta variant, which is transmissible among both unvaccinated and vaccinated people. Breakthrough infections are typically mild, but provide opportunities for the virus to continue to mutate and spread. Delta Variant and Long COVID Are the Biggest Pandemic Issues, Experts Say David Edwards, PhD, professor of biomedical engineering at Harvard University and founder of FEND, says the testing recommendation is for the good of public safety as opposed to the personal safety of someone who is fully vaccinated. FEND is a device that stops some airborne particles from entering a person’s upper airways. “The idea of people still being tested is a good one because I may be vaccinated, but I still may be a host,” Edwards tells Verywell. Sean Parsons, CEO of Ellume, a company that develops diagnostic products including an at-home COVID-19 test, says testing will be important in identifying cases of asymptomatic spread. These are more and more likely to occur as we move toward the “post-pandemic world,” he adds. “COVID is going to continue to circulate and people will continue to contract COVID even if they're vaccinated,” Parsons tells Verywell. Ellume’s at-home COVID-19 test comes with an app, which walks users through how to properly take and test a nasal sample. The results are 96% accurate and display on the app within 15 minutes, according to Ellume. For people who are fully vaccinated and asymptomatic, the purpose of testing is less for connecting them to treatment and more for preventing community spread that could harm others, Parsons says. This can be particularly crucial in school-aged children and people who live with older adults. “Reducing severe outcomes for those people in at-risk groups, but then reducing viral transmission for the other groups is really where we're headed," Parsons says. What This Means For You People who have been around someone with COVID-19 should wait three to five days after their exposure before getting tested, and wear a mask inside public spaces for 14 days after their exposure or until their test is negative, according to the CDC. If the person’s test is positive, the CDC says to self-isolate for 10 days. The information in this article is current as of the date listed, which means newer information may be available when you read this. For the most recent updates on COVID-19, visit our coronavirus news page. 1 Source Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Centers for Disease Control and Prevention. Interim Public Health Recommendations for Fully Vaccinated People. By Claire Wolters Claire Wolters is a staff reporter covering health news for Verywell. She is most passionate about stories that cover real issues and spark change. See Our Editorial Process Meet Our Medical Expert Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Other Helpful Report an Error Submit