Severity of SARS-CoV-2 Reinfection Similar to That of Initial Infection: Daily Dose

News
Article
Severity of SARS-CoV-2 Reinfection Similar to That of Initial Infection: Daily Dose / Image Credit: ©New Africa/AdobeStock
©New Africa/AdobeStock

Patient Care brings primary care clinicians a lot of medical news every day—it’s easy to miss an important study. The Daily Dose provides a concise summary of one of the website's leading stories you may not have seen.


On July 15, 2024, we reported on findings from a study published in Communications Medicine that compared the severity of SARS-CoV-2 reinfection with initial infection.

The study

Investigators analyzed electronic health data of 3.1 million participants in the National COVID Cohort Collaborative (N3C) to calculate summary statistics, effect sizes, and Kaplan-Meirer curves. A total of 212 984 participants (mean age, 45 years; 66.4% women) reported an initial SARS-CoV-2 infection between March 1, 2020, and December 31, 2022, and a second infection by March 2023, and were enrolled in the current study. A COVID-19 reinfection was defined as a positive SARS-CoV-2 polymerase chain reaction or antigen test 60 or more days after a COVID-19 infection index date.

The findings

Results showed a statistically significant association of severity between initial infection and reinfection (chi-squared value: 25 697; P < .0001) with a medium effect size (Cramer’s V: 0.20, DoF = 3).

Authors' comment

"Our work highlights the prevalence and impact of reinfections and suggests the need for further research."

Click here for more details.


Newsletter

Enhance your clinical practice with the Patient Care newsletter, offering the latest evidence-based guidelines, diagnostic insights, and treatment strategies for primary care physicians.

Recent Videos
"Vaccination is More of a Marathon than a Sprint"
Vaccines are for Kids, Booster Fatigue, and Other Obstacles to Adult Immunization
Document COVID Sequelae and Primary Care: An Interview with Samoon Ahmad, MD
Related Content
© 2025 MJH Life Sciences

All rights reserved.