RECOVER Studies
by the Numbers
RECOVER Studies involve researchers, participants, and medical centers across the U.S. Learn about the progress RECOVER has made on this page.
RECOVER Studies
Our Study Participants
RECOVER includes observational cohort studies for 3 groups of people.
Babies, Children, and Young AdultsEnrolled: 15,023
Women Who Were PregnantEnrolled: 2,190
AdultsEnrolled: 12,533
Total Numbers by
COVID-19 Status
Researchers are looking at participants who did and did not have COVID-19 to learn why some people get Long COVID and others don’t. Researchers need to compare large groups of people to better understand Long COVID in everyone.
0
people enrolled
people enrolled
Total Numbers by
Race and Ethnicity
RECOVER includes participants of all races and ethnicities to understand how COVID-19 affects everyone and help us learn if different treatments may work best for different groups.
Total Numbers by
Sex and Age
RECOVER includes participants of different ages and sexes to understand how COVID-19 affects everyone from babies to older adults and if different treatments may work best for different ages.
Female
0%
Male
0%
Other
0%
Your Participation Makes a Difference
Thanks to you, we’re making important discoveries that help us gain a better understanding of Long COVID. The numbers below show how much the adult and pediatric cohort participants are doing. These numbers are as of April 2026. As the study continues, these numbers will grow. Completing study activities makes a big difference!
Symptom Surveys
These surveys ask about how you are feeling. Everyone completes the surveys, whether you’ve had COVID-19 in the past, currently have COVID-19, or never had COVID-19.
139,716Adult
23,245Pediatric
Laboratory Results
Lab tests study the samples taken during procedures like biopsies for adults or saliva for kids.
1,417,387Adult
93,470Pediatric
Office Visits
Check-ups on your weight, height, blood pressure, heart rate, how your body reacts to standing up, and other tests.
46,387Adult
8,461Pediatric
Blood Samples
RECOVER researchers look closely at the cells in the blood for things that may be related to Long COVID.
43,953Adult
32,310Pediatric
Smell Tests
This test helps RECOVER researchers understand your sense of smell using scratch and sniff cards.
7,642Adult
Chest Scans
This test uses x-rays to see if your lungs are healthy or if you have trouble breathing.
5,507Adult
Flexibility Tests
This test looks at how far your fingers, thumbs, elbows, knees, and spine can bend.
4,900Pediatric
Thinking Tests
A checkup for your thinking skills, like memory, focus, and problem-solving, to see how well your brain is working.
6,592Pediatric
More RECOVER Studies Numbers
200+
The number of sites that have participated in observational cohort studies
60M+
60 million electronic health records are a part of our research
1,000+
The number of researchers and clinicians in RECOVER Studies
Families Enrolled in Tissue Pathology
More than 300 deceased people of different ages, sexes, and racial and ethnic backgrounds are part of RECOVER tissue pathology studies. The deceased person’s next of kin, such as a family member or loved one, gives permission for their deceased loved one to be in the study.
0%
of target enrollment
has been reached
has been reached
You Are Making a Difference
To learn more about how nearly 30,000 RECOVER participants are helping us understand Long COVID, visit the impact page.
Read Study Updates
Stay informed with important study announcements and articles about RECOVER Studies research.