Increased health care use among patients after COVID-19


A study led by Kaiser Permanente in Southern California of patients from eight health care organizations across the United States showed that COVID-19 was associated with a 4% increase in use of health care services over the six months after initial infection. The study was published August 8, 2022, in JAMA Network Open.

Some people who were infected with the virus that causes COVID-19 continued to experience effects from the infection, known as post-COVID conditions or long COVID, long after symptoms of the acute infection had subsided. This study showed that the greatest increase in encounters for these patients was in virtual visits, followed by emergency department visits.

“This study showed us that, in terms of the number of follow-up visits, a substantial amount of health care utilization occurs in the six months following the acute stage of SARS-CoV-2 infection, which highlights the potential for COVID-19 to exert an ongoing demand on health care organizations,” said Sara Y. Tartof, Ph.D., a lead author who is an epidemiologist with the Kaiser Permanente Southern California Department of Research & Evaluation and a faculty member of the Kaiser Permanente Bernard J. Tyson School of Medicine, both in Pasadena.

“A 4% increase in encounters applied across a large population is a large number of visits associated with substantial cost. The absolute number is big. In this case, it was over 27,000 extra encounters among the eight health care organizations included in this study.”

Tartof added: “On a broader scale, this study will help health care organizations develop their long-term strategic plans to meet patients’ needs following COVID-19 infection.”

This study included patients of all ages from eight large integrated health care organizations across the United States who completed a COVID-19 diagnostic test between March 1 and November 1, 2020. Patients were matched on age, sex, race, ethnicity, site, and date of COVID-19 test, and were followed for six months. The final matched study group consisted of 127,859 patients who tested positive for COVID-19 and 127,859 patients who tested negative.