Clinical trials
COVID-19 Respiratory Infection clinical trials
Below are recruiting covid-19 respiratory infection clinical trials, each written for real people, not researchers. We’re tracking 64 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07149428Recruiting
Deep study of smell loss causes using brain scans
This study uses brain imaging and electrical recordings to understand the brain's role in smell loss from any cause—like COVID, sinus problems, or chemotherapy. You may be eligible if you have any degree of smell loss lasting under a year.
Bethesda, MarylandAges 18–99 - NCT06417762Recruiting
A study testing social media health messages for community health workers
This trial teaches community health workers how to find and share true health information on social media, and how to spot and stop false information. It aims to reduce illness from respiratory viruses in seven communities.
Chicago, IllinoisAges 18–99 - NCT05141058RecruitingPhase 1
T cell therapy to help prevent COVID-19 after transplant
This Phase 1 trial tests a donated immune-cell treatment (T cells) to help immunocompromised people fight or resist COVID-19 after they recently received a bone marrow or stem cell transplant. It aims to see if the treatment is safe and if it helps the body respond better to the virus.
Washington D.C., District of ColumbiaAges 2–80 - NCT02735707RecruitingPhase 3
Adaptive trial for severe pneumonia care in intensive care
This study tests ways to improve treatment for adults with severe pneumonia that lands them in the ICU, adjusting the plan as results come in. It may help your care team find better treatments for lung infection and breathing/heart support needs.
Jacksonville, FloridaAges 18 years+ - NCT06679140RecruitingPhase 3
Study of Ibuzatrelvir for COVID-19 in high-risk patients
This trial tests if a new medicine called ibuzatrelvir can help people with COVID-19 who have certain health risks avoid severe illness. It is for patients who cannot or choose not to take another COVID-19 pill called Paxlovid.
Huntsville, AlabamaAges 12 years+ - NCT06848309Recruiting
Immune response study for influenza or COVID-19
This study looks at how your immune system fights off flu or COVID-19. If you have a current or recent infection, or if you've been vaccinated in the past year, you may be able to join.
St Louis, MissouriAges 18–60 - NCT06667063Recruiting
Immune response study for COVID-19 and flu
This study looks at how your immune system responds to COVID-19 or the flu. It may help researchers understand these infections better, whether you are currently sick or healthy.
Wuhan, HubeiAges 18 years+ - NCT04952870Recruiting
Study breathing treatment and early immunity in newborns after COVID
This study looks at how newborns’ bodies are affected by COVID-19 around birth and whether a breathing support treatment (inhaled nitric oxide) changes outcomes. It also compares COVID-exposed babies and a similar group of babies without COVID who are not receiving the breathing treatment.
LilleAges Up to 3 months - NCT07420985RecruitingPhase 2
Ingavirin forte for flu and other viral infections
This trial tests different doses of Ingavirin Forte capsules for treating influenza and other respiratory viruses. It may help people with fever, cough, sore throat, and body aches who have been sick less than 48 hours.
IvanovoAges 18–65 - NCT04510025Recruiting
MRI study of whole-body effects of moderate to severe COVID
This study looks at how COVID-19 affects multiple organs in the body, using MRI scans and related measurements. It may help researchers better understand who is at risk for longer-lasting or widespread effects after COVID.
OxfordAges 18–100 - NCT07658534RecruitingPhase 2/Phase 3
Ziresovir for high-risk adults with RSV
This trial tests an antiviral drug called Ziresovir in adults with RSV who have health conditions that make them high-risk, such as lung disease, heart disease, or a weakened immune system. It aims to see if the drug can reduce symptoms like coughing and shortness of breath.
Beijing, Beijing MunicipalityAges 18–85 - NCT06006884Recruiting
Understanding long-term lung effects after COVID-19
This study looks at why some people develop long-term lung problems after COVID-19. It compares people who had severe COVID-19 and were hospitalized to those who had mild infections and recovered at home.
Rochester, MinnesotaAges 18 years+ - NCT07076862RecruitingEarly Phase 1
PET scan study for long COVID symptoms
This study uses a special PET scan to look at inflammation in the body of people with long COVID (symptoms lasting 3+ months after infection). The goal is to understand why symptoms persist and find better ways to help.
Sacramento, CaliforniaAges 18 years+ - NCT06672692Recruiting
Study of a new test for flu, RSV, and COVID-19 in people with symptoms
This trial evaluates a new test that can detect flu A/B, RSV, and COVID-19 from a single nose swab. It is for people who are currently sick with respiratory symptoms and are either hospitalized, in the ER, visiting a clinic, or living in a long-term care facility.
Henderson, NevadaAges Any age - NCT04484025Enrolling by invitationPhase 2
Study of an oral drug for hospitalized COVID-19 patients
This trial tests an oral drug called SPI-1005 for people hospitalized with moderate COVID-19. The drug may help reduce inflammation and protect the lungs, and the study will compare it to a placebo (a pill with no active medicine) to see if it helps people recover.
New Haven, ConnecticutAges 18 years+ - NCT06614309Recruiting
Non-invasive treatment for brain fog from long COVID
This study tests a non-invasive treatment to help with brain fog caused by long COVID. It may improve your symptoms if you have trouble thinking clearly or focusing.
Scottsdale, ArizonaAges 18 years+ - NCT06282718Recruiting
Observational study of respiratory infections in primary care
This study tracks how patients with respiratory infections (like bronchitis, sore throats, or COVID-19) are treated in family doctor offices across Europe. The goal is to learn more about these infections and improve care. You may be able to join if you have a cough, sore throat, or other symptoms that suggest a respiratory infection, and you go to a participating clinic.
AntwerpAges Any age - NCT06667700RecruitingPhase 3
A study of the antiviral molnupiravir for high-risk people with COVID-19
This study tests an antiviral pill called molnupiravir to see if it can prevent severe COVID-19 in people who are at high risk and cannot take Paxlovid. If you have mild to moderate COVID-19 symptoms and certain health risks, you may be able to join.
Cullman, AlabamaAges 18 years+ - NCT04335773Recruiting
Study of COVID-19 in hospitalized children
This study looks at children (ages 0 to 18) who are in the hospital with suspected COVID-19. It aims to understand what factors affect outcomes and how the immune system responds.
LørenskogAges Up to 18 years - NCT07157007RecruitingPhase 2
Testing a New COVID-19 Drug for Mild to Moderate Cases
This trial tests a new drug, ratutrelvir, for people with mild to moderate COVID-19. It aims to find a safe and effective dose to help you feel better faster.
Charlestown, New South WalesAges 18 years+ - NCT04746183RecruitingPhase 1/Phase 2
Early trial testing treatments for COVID-19 in the first days
This early-stage study tests COVID-19 treatments in people who have recently developed symptoms and who test positive for the virus. It aims to find safer, more effective options for preventing worsening disease, especially in higher-risk groups.
Cape TownAges 18 years+ - NCT04815096RecruitingPhase 2
PET scan study of immune activity after COVID-19
This Phase 2 study uses a special PET scan to look at how active your immune system is after a recent COVID-19 infection. The goal is to understand what the immune response looks like and whether this imaging approach could help guide care.
San Francisco, CaliforniaAges 18 years+ - NCT07197164RecruitingPhase 2
Remdesivir for kidney transplant patients with mild COVID-19
This trial tests whether giving remdesivir to kidney transplant patients who test positive for COVID-19 can prevent them from getting severely ill. It is for people who have already had at least three COVID-19 vaccine doses and are scheduled to receive a kidney transplant soon.
Badalona, BarcelonaAges 18 years+ - NCT06355258RecruitingPhase 1
Troxerutin to prevent blood clots in COVID-19 patients
This trial tests if the drug troxerutin can prevent dangerous blood clots in adults hospitalized with mild or severe COVID-19. If you have COVID-19 and are not already on blood thinners or at high risk for bleeding, you may be able to join.
Shaoxing, ZhejiangAges 18 years+
Hear when a new COVID-19 Respiratory Infection trial opens
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Common questions
- Are there clinical trials for covid-19 respiratory infection?
- Yes. Clin2 currently lists 64 recruiting covid-19 respiratory infection studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a covid-19 respiratory infection trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a covid-19 respiratory infection trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.