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Post-COVID Conditions (Long COVID) clinical trials in Houston, TX

13 studies for Post-COVID Conditions (Long COVID) are looking for participants at sites in and around Houston (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

A Clinical Study of Molnupiravir to Prevent Severe Illness From Coronavirus Disease 2019 (COVID-19) in People Who Are High Risk (MK-4482-023)

RecruitingPhase 3
  • Houston Methodist Hospital ( Site 3800), Houston
  • MD Anderson ( Site 3843), Houston
Ages 18 and older · All sexes · Updated Oct 5, 2026 · NCT06667700

A Study of COVID-19 Vaccine(s) in Children and Adults

RecruitingPhase 3Healthy volunteers welcome
  • DM Clinical Research-Cyfair, Houston
Ages 5 and older · All sexes · Updated Sep 28, 2026 · NCT07798648

A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised

RecruitingPhase 3
  • Cockrell Center for Advanced Therapeutics, Houston
  • Houston Methodist - Transplant Center, Houston
  • Houston Methodist Hospital, Houston
  • and 4 more
Ages 18 and older · All sexes · Updated Sep 25, 2026 · NCT07013474

A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease

RecruitingPhase 3
  • Memorial Hermann Hospital TMC, Houston
  • The University of Texas Health Science Center at Houston, Houston
  • UT Physicians, Houston
  • and 4 more
Ages 12 and older · All sexes · Updated Sep 25, 2026 · NCT06679140

The Impact of COVID-19 on Pulmonary Procedures

RecruitingObservational studyHealthy volunteers welcome
  • M D Anderson Cancer Center, Houston
All ages · All sexes · Updated Aug 10, 2026 · NCT05022446

Assessment of the Psychosocial Impact of the COVID-19 Pandemic on the MD Anderson Cancer Center Workforce

RecruitingObservational study
  • M D Anderson Cancer Center, Houston
Ages 18 and older · All sexes · Updated Jul 22, 2026 · NCT04491292

Phase III DAS181 Lower Tract PIV Infection in Immunocompromised Subjects (Substudy: DAS181 for COVID-19): RCT Study

RecruitingPhase 3
  • Baylor College of Medicine, Houston
  • MD Anderson, Houston
All ages · All sexes · Updated Jun 23, 2026 · NCT03808922

The Effect of COVID-19 Pandemic on Adolescent and Young Adult Cancer Patients and Survivors

RecruitingObservational study
  • M D Anderson Cancer Center, Houston
Ages 18 to 39 · All sexes · Updated Jun 2, 2026 · NCT04551378

Impact of COVID-19 Pandemic on Out-of-Pocket Costs, Lost Wages, and Unemployment in Patients With Breast Cancer Undergoing Breast Surgery

RecruitingObservational study
  • M D Anderson Cancer Center, Houston
Ages 18 and older · Women · Updated May 4, 2026 · NCT04169542

Well-Being and Health-Related Quality of Life in Melanoma Patients During COVID-19 Pandemic

RecruitingObservational study
  • M D Anderson Cancer Center, Houston
All ages · All sexes · Updated Apr 16, 2026 · NCT04474301

Vale+Tú Salud: Corner-Based Trial to Test a Latino Day Laborer Program Adapted to Prevent COVID-19

Recruiting
  • The University of Texas Health Science Center at Houston, Houston
Ages 18 and older · All sexes · Updated Aug 26, 2025 · NCT06821113

Clazakizumab vs. Placebo - COVID-19 Infection

RecruitingPhase 2
  • Houston Methodist Hospital, Houston
Ages 18 and older · All sexes · Updated Jul 31, 2020 · NCT04494724

About Post-COVID Conditions (Long COVID)

Anyone who had COVID-19 can have ongoing symptoms. Learn about post-COVID conditions (long COVID), including symptoms, diagnosis, treatments, and prevention.

More about Post-COVID Conditions (Long COVID) on MedlinePlus

Post-COVID Conditions (Long COVID) trials in other cities

Other studies in Houston

From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.