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COVID19 Paid Clinical Trials in California
A listing of 47 COVID19 clinical trials in California actively recruiting volunteers for paid trials and research studies in various therapeutic areas.
1 - 12 of 47
The state of California currently has 47 active clinical trials seeking participants for COVID19 research studies. These trials are conducted in various cities, including Los Angeles, San Francisco, San Diego and Sacramento.
Featured Trial
Paid Clinical Studies Nationwide
Recruiting
Nationwide clinical trials offered in your area. Some trials offering up to several thousand dollars in compensation for participation.
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Recruiting
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Conditions:
Overweight
Overweight and Obesity
Obesity
Weight Loss
Morbid Obesity
Strategies and Treatments for Respiratory Infections & Viral Emergencies (STRIVE): Shionogi Protease Inhibitor (Ensitrelvir)
Recruiting
Treatments are needed to improve outcomes among patients hospitalized for COVID-19, including direct-acting antiviral (DAA) agents to mitigate the pathology driven by ongoing viral replication. This trial will evaluate S-217622 (ensitrelvir), an anti-SARS-CoV2 3C-like protease inhibitor (PI) developed by Shionogi \&; Co. Ltd.
The study design is a randomized, placebo-controlled, multi-center international clinical trial that will evaluate the clinical efficacy of ensitrelvir when given in addit... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: UCSF Fresno (Site 203-005), Fresno, California +16 locations
Conditions: COVID-19
A Pilot rTMS Trial for Neuropsychiatric Symptoms of Long-COVID
Recruiting
This is a pilot randomized trial of rTMS for symptoms of fatigue and brain fog, and other neuropsychiatric symptoms of Long-COVID (Post-COVID, post-acute sequelae of COVID-19 infection, PASC). Twenty participants diagnosed with Long-COVID and recruited from the UCLA Long-COVID clinic will be randomized to receive active rTMS versus sham stimulation for 15 treatments followed by another 15 open-label rTMS treatments. Investigators will compare the safety and tolerability of rTMS vs Sham and exami... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/31/2025
Locations: UCLA Semel Institute, Los Angeles, California
Conditions: Long Covid-19, PASC Post Acute Sequelae of COVID 19, Brain Fog, Fatigue
A Clinical Study of Molnupiravir to Prevent Severe Illness From Coronavirus Disease 2019 (COVID-19) in People Who Are High Risk (MK-4482-023)
Recruiting
Researchers are looking for other ways to prevent severe illness from COVID-19. COVID-19 is a virus that most often causes mild flu or cold-like symptoms. However, people with certain health conditions or other factors have a high risk (chance) of getting severely ill from COVID-19, which can require a hospital stay or lead to death. Some people who are high risk for severe illness may be unable to take certain treatments for COVID-19 because they are not available to them, or they take other me... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/30/2025
Locations: Clinica de Salud del Valle de Salinas ( Site 3825), Castroville, California +7 locations
Conditions: Coronavirus Disease (COVID-19)
COVID-19 Vaccines International Pregnancy Exposure Registry
Recruiting
The objective of the COVID-19 Vaccines International Pregnancy Exposure Registry (C-VIPER) is to evaluate obstetric, neonatal, and infant outcomes among women vaccinated during pregnancy with a COVID-19 vaccine.
Specifically, the C-VIPER will estimate the risk of obstetric outcomes (spontaneous abortion, antenatal bleeding, gestational diabetes, gestational hypertension, intrauterine growth restriction, postpartum hemorrhage, fetal distress, uterine rupture, placenta previa, chorioamnionitis, C... Read More
Gender:
FEMALE
Ages:
Between 18 years and 50 years
Trial Updated:
07/28/2025
Locations: Pregistry, Los Angeles, California
Conditions: Covid19
COVID-19 International Drug Pregnancy Registry
Recruiting
The objective of the COVID-19 International Drug Pregnancy Registry (COVID-PR) is to evaluate obstetric, neonatal, and infant outcomes among women treated with monoclonal antibodies or antiviral drugs indicated for mild, moderate, or severe COVID-19 from the first day of the last menstrual period (LMP) to end of pregnancy. For monoclonal antibodies, the exposure period also includes 90 days prior to the first day of the LMP.
Gender:
FEMALE
Ages:
Between 18 years and 50 years
Trial Updated:
07/28/2025
Locations: Pregistry, Los Angeles, California
Conditions: Covid19
KIDney Injury in Times of COVID-19 (KIDCOV)
Recruiting
There is an unmet need to evaluate the impact of sub-clinical/mild COVID19 disease in the outpatient setting on prevalent and incident renal injury, as this data is currently unavailable. To capture the diversity of race/ethnic risk and COVID19 related municipal shelter-in-place guidance, the investigators will enroll COVID19-negative and COVID19-positive samples balanced by race/ethnicity from 3 different states, California, Michigan, and Illinois. Study endpoints will be assayed from urine sam... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/24/2025
Locations: UCSF, San Francisco, California
Conditions: SARS-CoV Infection, Covid19, Corona Virus Infection, Acute Kidney Injury, Kidney Injury
A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised
Recruiting
This is a Phase 3, randomized, actively controlled, double-blinded, double-dummy, superiority study to evaluate the efficacy and safety of ibuzatrelvir alone and in combination with remdesivir IV compared to remdesivir IV alone for the treatment of symptomatic COVID-19 in severely immunocompromised adult participants who are non-hospitalized or are hospitalized for observation but do not require supplemental oxygen for COVID-19.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/24/2025
Locations: Hope Clinical Research, Inc., Canoga Park, California
Conditions: COVID-19 Infection
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
Recruiting
The purpose of the study is to evaluate whether ibuzatrelvir is effective and safe in adults and adolescents with COVID-19 who do not need to be in the hospital but who are at high risk for progression to severe disease. Eligible participants will be randomly assigned (by chance) to receive ibuzatrelvir or matching placebo orally for 5 days. Co-administration of locally available standard of care is allowed. The total duration of the study is around 6 months.
Gender:
ALL
Ages:
12 years and above
Trial Updated:
07/16/2025
Locations: National Institute of Clinical Research - Bakersfield, Bakersfield, California +10 locations
Conditions: COVID-19 SARS-CoV-2 Infection
EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease
Recruiting
The purpose of this clinical trial is to learn about the safety, pharmacokinetics (pharmacokinetics helps us understand how the drug is changed and eliminated from your body after you take it), and efficacy (how well a study treatment works in the study) of the study medicine (called nirmatrelvir/ritonavir) for potential treatment of coronavirus disease 2019 (COVID-19).
The study medicine will be given to patients under 18 years of age with COVID-19 that are not hospitalized but are at risk for... Read More
Gender:
ALL
Ages:
Between 0 years and 17 years
Trial Updated:
07/16/2025
Locations: Children's Hospital Los Angeles, Los Angeles, California +3 locations
Conditions: COVID-19
Randomized Double-Blind Placebo-Controlled Trial EValuating Baricitinib on PERSistent NEurologic and Cardiopulmonary Symptoms of Long COVID
Recruiting
The overarching goal of this study is to determine if baricitinib, as compared to placebo, will improve neurocognitive function, along with measures of physical function, quality of life, post-exertional malaise, effect of breathlessness on daily activities, post-COVID-19 symptom burden, and biomarkers of inflammation and viral measures, in participants with Long COVID.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
07/13/2025
Locations: University of California San Francisco, San Francisco, California
Conditions: Long COVID, Sars-CoV-2 Infection, Coronavirus Infections, COVID-19
A Study to Learn About How the Flu and COVID-19 Vaccines Act in Healthy People
Recruiting
The purpose of this study is to learn about how the flu and COVID vaccines act when given alone or when mixed together.
This study is seeking healthy participants aged 18 or older. All participants in this study will receive only 1 shot to their arm, either a flu or COVID vaccine, alone or mixed. Participants will take part in this study for about 6 months, and participants will need to visit the clinical study site at least 4 times.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/18/2025
Locations: Anaheim Clinical Trials, LLC, Anaheim, California +4 locations
Conditions: Influenza, COVID-19 (Coronavirus Disease 2019)
Outpatient Treatment With Anti-Coronavirus Immunoglobulin
Recruiting
The primary objective of the Outpatient Treatment with Anti-Coronavirus Immunoglobulin (OTAC) (INSIGHT 012) trial is to compare the safety and efficacy of a single infusion of anti-COVID-19 hyperimmune intravenous immunoglobulin (hIVIG) versus placebo among adults with recently diagnosed severe acute respiratory syndrome - coronavirus 2 (SARS-CoV2) infection who do not require hospitalization. The primary endpoint of this double-blind randomized trial is a five-category ordinal outcome that asse... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/11/2025
Locations: VA Northern California Health Care System (074-023), Mather, California +2 locations
Conditions: COVID, SARS-CoV2 Infection, Covid19
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