Plain-English translation of NCT04404062 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This research study is testing two types of blood tests to better understand COVID-19 in your community. One test (called PCR) checks if you currently have an active virus infection, while the other test looks for antibodies—proteins your body makes after fighting the virus—to see if you've been infected before and may have immunity.
Scientists need to understand how many people are infected with COVID-19, including those who have no symptoms and don't realize they're contagious. This information will help predict future waves of infection and track how long immunity lasts after infection or vaccination.
You likely qualify if…
You likely don't qualify if…
As a participant, you would provide blood samples for testing at one or more visits. The researchers use these samples to run PCR tests (checking for active infection) and antibody tests (checking for past infection and immunity). The study is tracking participants over time to see how infections occur, how long immunity lasts, and whether vaccines work effectively.
AI-generated summary from trial data · Jun 20, 2026 · Not medical advice
United Kingdom
Collaborators
Richmond Pharmacology Limited
Enrollment target
~2,500 participants
Started
March 2020
Primary completion
December 2028
Age range
5 Years – 70 Years
Last updated on clinicaltrials.gov in June 2026.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
Jorg Taubel, MD
Richmond Pharmacology Limited
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.