Croup
MONDO:0005722Acute upper respiratory airways infection that results in the swelling of the larynx. It is usually caused by parainfluenza viruses. Signs include a characteristic barking cough and stridor.
Also known as: acute laryngotracheobronchitis, acute obstructive laryngitis, acute laryngotracheitis
106 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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New calculator could help sick newborns get the right antibiotic dose faster
Disease control Recruiting nowThis study tests whether using early drug monitoring and a dose-adjustment calculator can help infants under 90 days old with sepsis reach target vancomycin levels more quickly. Currently, doctors must wait 24-48 hours to check drug levels, which can delay effective treatment. Th…
Phase: PHASE4 • Sponsor: Murdoch Childrens Research Institute • Aim: Disease control
Last updated Jun 27, 2026 12:10 UTC
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Mouth spray could curb virus spread in the air
Disease control Recruiting nowThis study tests whether ColdZyme mouth spray can lower the amount of virus people breathe out when they have a cold or flu. Researchers will measure virus particles in exhaled air before and after using the spray. The goal is to see if the spray might help reduce airborne transm…
Phase: NA • Sponsor: Lund University • Aim: Disease control
Last updated Jun 27, 2026 12:04 UTC
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Antibiotic shot under skin could replace IV drip for serious infections
Disease control Recruiting nowThis study is testing whether a powerful antibiotic called piperacillin/tazobactam can be given as a continuous shot under the skin instead of through an IV line. About 240 adults with serious bacterial infections will be randomly assigned to receive the drug either subcutaneousl…
Phase: PHASE2 • Sponsor: Azienda Sanitaria Universitaria Friuli Centrale • Aim: Disease control
Last updated Jun 27, 2026 11:03 UTC
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Could a simple pill replace the IV drip for ER infections?
Disease control Recruiting nowThis study tests whether giving oral antibiotics instead of IV antibiotics is just as safe and effective for patients with common infections like pneumonia, urinary tract infections, and cellulitis. About 4,000 adults in Danish emergency rooms will be randomly assigned to start o…
Phase: NA • Sponsor: University of Southern Denmark • Aim: Disease control
Last updated Jun 27, 2026 09:11 UTC
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New antibiotic dosing method could help sepsis patients recover faster
Disease control Recruiting nowThis study compares two ways of giving the antibiotic cefepime to very sick patients with sepsis in the ICU. The new method adjusts the dose based on the patient's kidney function, using only standard doses. The main goal is to see if this approach is easy for doctors to use and …
Phase: NA • Sponsor: Mayo Clinic • Aim: Disease control
Last updated Jun 27, 2026 09:02 UTC
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Could a simple zinc pill save thousands of newborns from deadly infections?
Disease control Recruiting nowThis study tests whether giving zinc supplements along with standard antibiotics can reduce deaths and improve recovery in young infants (0-59 days old) hospitalized with severe infections like sepsis or pneumonia. About 3,250 babies in Tanzania will receive either zinc or a plac…
Phase: PHASE3 • Sponsor: Harvard School of Public Health (HSPH) • Aim: Disease control
Last updated Jun 27, 2026 08:03 UTC
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New AI-Powered swab test aims to spot viruses in minutes
Diagnosis Recruiting nowThis study tests a new technology called Pictura Bio that aims to detect respiratory viruses quickly and cheaply from nose or throat swabs. Researchers will collect samples from 1000 adults and children with suspected viral infections at a UK hospital. The data will be used to tr…
Sponsor: Portsmouth Hospitals NHS Trust • Aim: Diagnosis
Last updated Jul 02, 2026 00:00 UTC
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New rapid tests for respiratory infections put to the test in africa
Diagnosis Recruiting nowThis study is testing new rapid tests (lateral flow and microfluidic devices) to detect respiratory infections in children and adults in Uganda, Ethiopia, and Senegal. Researchers want to see if these tests are accurate and easy to use in low-resource clinics. Participants with r…
Sponsor: Karolinska Institutet • Aim: Diagnosis
Last updated Jul 01, 2026 00:00 UTC
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New PET tracer aims to reveal hidden inflammation in cancer patients
Diagnosis Recruiting nowThis early-stage study tests a new imaging agent called 18F-4FN for PET scans to safely detect inflammation in the body. It involves 55 adults with cancer who are on immunotherapy or have suspected inflammation. The goal is to see if this agent can highlight areas of inflammation…
Phase: PHASE1 • Sponsor: M.D. Anderson Cancer Center • Aim: Diagnosis
Last updated Jun 27, 2026 12:36 UTC
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New scan could light up hidden infections
Diagnosis Recruiting nowThis early study is testing a radioactive tracer called [18F]F-TMP that is injected into the body and then tracked with a PET/CT scan. The goal is to see if the tracer collects at sites of bacterial infection, making them visible on the scan. Twenty adults with known or suspected…
Phase: PHASE1 • Sponsor: University of Pennsylvania • Aim: Diagnosis
Last updated Jun 27, 2026 09:02 UTC
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New test aims to stop unnecessary antibiotics for respiratory infections
Diagnosis Recruiting nowThis study is testing a new diagnostic tool that helps doctors quickly tell if a respiratory infection is caused by bacteria or a virus. The goal is to see if using this test leads to better treatment decisions, fewer unnecessary antibiotics, and lower healthcare costs. About 100…
Phase: NA • Sponsor: The University of Texas Health Science Center, Houston • Aim: Diagnosis
Last updated Jun 27, 2026 08:13 UTC
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AI learns to see inside your throat: new tool could catch disease early
Diagnosis Recruiting nowThis study is developing an artificial intelligence system that can recognize different parts of the throat and nasal passages and detect abnormal growths or lesions. Researchers will train the AI using thousands of endoscopy images and then test its accuracy against doctors with…
Sponsor: Ruijin Hospital • Aim: Diagnosis
Last updated Jun 27, 2026 08:10 UTC
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New Finger-Prick test could slash unnecessary antibiotics in kids
Diagnosis Recruiting nowThis study is testing a finger-prick blood test called FebriDx in 800 children aged 2-11 who have a fever and symptoms of a respiratory infection. The goal is to see if the test can quickly tell whether the infection is caused by bacteria or something else (like a virus). If accu…
Sponsor: Lumos Diagnostics • Aim: Diagnosis
Last updated Jun 27, 2026 07:56 UTC
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Computer alert aims to stop deadly clots after hospital stay
Prevention Recruiting nowThis study tests whether a computer alert can help doctors remember to prescribe blood-thinning medicine for high-risk patients after they leave the hospital. Blood clots are a serious risk for some hospitalized patients, even after discharge. The trial will include 400 adults ag…
Phase: NA • Sponsor: Brigham and Women's Hospital • Aim: Prevention
Last updated Jun 27, 2026 09:07 UTC
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Fish oil in pregnancy may cut childhood asthma risk, major trial launches
Prevention Recruiting nowThis study is testing whether taking high-dose fish oil supplements during pregnancy can prevent asthma and persistent wheezing in early childhood. The trial will enroll 2000 pregnant Danish women with low blood levels of omega-3s. Participants take fish oil or placebo capsules d…
Phase: PHASE3 • Sponsor: Professor Klaus Bønnelykke • Aim: Prevention
Last updated Jun 27, 2026 07:53 UTC
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Prenatal vitamin d: a simple step to stop childhood asthma?
Prevention Recruiting nowThis study is testing whether taking a higher dose of vitamin D during pregnancy can prevent asthma and persistent wheezing in children up to age 3. Researchers will give 2000 pregnant women either vitamin D or a placebo daily from week 22-26 of pregnancy until one week after del…
Phase: PHASE3 • Sponsor: Professor Klaus Bønnelykke • Aim: Prevention
Last updated Jun 27, 2026 07:52 UTC
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Could a simple saltwater spray ease your next cold?
Symptom relief Recruiting nowThis study is testing a hypertonic seawater aerosol spray (a saltwater mist) to see if it helps relieve nasal symptoms, improve sleep, and thin mucus in people with colds, sinus infections, or similar upper respiratory infections. About 110 adults and children aged 2 and older wi…
Phase: NA • Sponsor: Laboratoires Gilbert • Aim: Symptom relief
Last updated Jun 27, 2026 12:35 UTC
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New pump lets kids get antibiotics at home, not hospital
Symptom relief Recruiting nowThis study tests whether giving antibiotics through a small, portable pump over 24 hours is safe and cost-effective for children with serious bacterial infections. About 150 kids who are stable enough for home care will receive the pump instead of multiple daily hospital injectio…
Phase: PHASE3 • Sponsor: Tampere University Hospital • Aim: Symptom relief
Last updated Jun 27, 2026 12:30 UTC
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Music before surgery: a simple tune to calm nerves?
Symptom relief Recruiting nowThis study tests whether a 20-minute session of passive music therapy, delivered through an app just before entering the operating room, can lower anxiety and pain in adults undergoing ear, nose, or throat surgery. Five hundred participants will be randomly assigned to receive mu…
Phase: NA • Sponsor: Clinique Saint-Vincent • Aim: Symptom relief
Last updated Jun 27, 2026 11:02 UTC
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Aging immune system under the microscope: study seeks clues to infection risk in seniors
Knowledge-focused Recruiting nowThis study looks at how the immune system changes with age and how that affects the risk of infections in people 60 and older. Researchers will collect blood, urine, stool, and other samples from elderly patients with infections and healthy older adults. By analyzing immune cells…
Sponsor: Huashan Hospital • Aim: Knowledge-focused
Last updated Jul 01, 2026 00:00 UTC
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Swiss study aims to curb antibiotic overuse with new guidelines
Knowledge-focused Recruiting nowThis study tests whether implementing new Swiss national guidelines for acute respiratory infections can reduce unnecessary antibiotic prescribing in primary care. Researchers will work with 200 family doctors in quality circles and walk-in clinics, providing training and materia…
Phase: NA • Sponsor: Center for Primary Care and Public Health (Unisante), University of Lausanne, Switzerland • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:02 UTC
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NIH launches study to better handle bioterrorism and outbreak exposures
Knowledge-focused Recruiting nowThis study aims to improve how doctors evaluate and manage people who have been exposed to bioterrorism agents (like anthrax) or emerging infectious diseases (like SARS or new flu strains). Up to 200 participants, including patients and healthcare workers, will be monitored and t…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Vietnam launches major RSV study in toddlers
Knowledge-focused Recruiting nowThis study is observing 2,000 children under 2 years old in Ho Chi Minh City who have respiratory infections. Researchers will test for RSV, track how the virus spreads across seasons, and measure the illness's impact on families, including medical costs. No new treatments or vac…
Sponsor: Tam Anh Research Institute • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
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New rapid test could speed up sepsis diagnosis in ER
Knowledge-focused Recruiting nowThis study is testing a new rapid diagnostic device called In-Dx to quickly identify infections and antibiotic resistance in emergency patients with suspected sepsis. Researchers will compare the device's results to standard lab cultures using stored samples from 2,500 patients. …
Sponsor: Michigan State University • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:05 UTC
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Scientists scour lungs for clues to why some get infections
Knowledge-focused Recruiting nowThis study gathers fluid and tissue from the lungs and nose of healthy volunteers and people with a history of lung infections. Researchers will compare samples to find differences in immune function that might explain why some people are more prone to infections. Participants un…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:01 UTC
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Could personalized antibiotic dosing save lives in liver cirrhosis?
Knowledge-focused Recruiting nowThis study is observing 1,000 people with liver cirrhosis who have bacterial infections and are being treated with β-lactam antibiotics. Researchers want to see how the body processes these drugs and whether personalized dosing could improve survival. The study is observational, …
Sponsor: The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:38 UTC
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GP training trial aims to curb unnecessary antibiotic use
Knowledge-focused Recruiting nowThis study tests two ways to help general practitioners (GPs) use antimicrobial stewardship resources when treating respiratory tract infections. One group gets online training and self-audit tools; the other gets face-to-face support. Researchers will track how often GPs use the…
Phase: NA • Sponsor: University of Wollongong • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:32 UTC
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Can a simple breath test diagnose diseases in children?
Knowledge-focused Recruiting nowThis study aims to see if analyzing the chemicals in a child's breath can help diagnose and monitor diseases like asthma, neurological disorders, and type 1 diabetes. Researchers will collect breath samples from up to 3,600 children and teens to find patterns linked to these cond…
Sponsor: University Children's Hospital Basel • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:30 UTC
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Tiny probe could give doctors a window into infant brains
Knowledge-focused Recruiting nowThis study tests a new, lightweight ultrasound device called NeoDoppler that can be gently placed on a newborn's soft spot (fontanelle) to continuously measure blood flow in the brain. Researchers will enroll 180 preterm and full-term infants, including those with conditions like…
Sponsor: St. Olavs Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:23 UTC
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Massive european study to monitor common colds and flu in real time
Knowledge-focused Recruiting nowThis study will follow 2,000 people of all ages who visit their doctor with symptoms of an acute respiratory infection, like cough, sore throat, or runny nose. Researchers will collect information on symptoms, treatments, and lab results to better understand how these infections …
Sponsor: European Clinical Research Alliance for Infectious Diseases (ECRAID) • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:08 UTC
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Blood markers could spot sepsis risk early
Knowledge-focused Recruiting nowThis study is looking at whether early signs of inflammation in the blood can help identify which patients with infections are at risk for serious complications like sepsis. Researchers will follow 4,200 adults with confirmed or suspected infections, as well as healthy controls, …
Sponsor: Beth Israel Deaconess Medical Center • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:08 UTC
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New rapid test aims to curb antibiotic overuse for common colds
Knowledge-focused Recruiting nowThis study looks at whether a quick lab test (Spotfire R/ST) can help doctors decide when antibiotics are truly needed for people with respiratory infections like colds or sore throats. About 800 urgent care patients will take part, and researchers will compare antibiotic use bef…
Phase: NA • Sponsor: BioMérieux • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:04 UTC
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Teens needed for First-Ever antibiotic safety study
Knowledge-focused Recruiting nowThis early-stage study is testing whether a single dose of an experimental antibiotic combination (sulopenem etzadroxil plus probenecid) is safe and tolerable in 12 adolescents already receiving standard antibiotics for a bacterial infection. Researchers will measure how the drug…
Phase: PHASE1 • Sponsor: Iterum Therapeutics, International Limited • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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Scientists track prednisolone levels to improve dosing for inflammatory conditions
Knowledge-focused Recruiting nowThis pilot study is measuring prednisolone levels in 120 people with inflammatory diseases like thyroid eye disease, vasculitis, COPD, asthma, and others. Participants take high-dose prednisolone as part of their routine care, and researchers take timed blood samples to see how t…
Sponsor: Imperial College London • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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New study aims to perfect antibiotic dosing for sickest kids
Knowledge-focused Recruiting nowThis study looks at how the antibiotic ceftazidime avibactam behaves in 30 children with severe infections who are in intensive care, some on life support. Researchers will measure drug levels in the blood to understand the right dose. The goal is to improve treatment for life-th…
Sponsor: Children's Hospital of Fudan University • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:01 UTC
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When to boost? new trial seeks best COVID-19 shot timing for vulnerable patients
Knowledge-focused Recruiting nowThis study looks at 320 adults who are about to start strong immune-suppressing therapy and have already had at least two COVID-19 shots. Researchers want to find out if giving a COVID-19 booster right before starting therapy or waiting six months provides better protection. Part…
Phase: PHASE3 • Sponsor: Kirby Institute • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:08 UTC
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New study tracks antifungal drug in sick kids
Knowledge-focused Recruiting nowThis study looks at how the antifungal medicine caspofungin behaves in children with severe infections, especially those with liver problems or on life support like ECMO. Researchers will measure drug levels in the blood to understand dosing needs. About 60 children in intensive …
Sponsor: Children's Hospital of Fudan University • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:06 UTC
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Massive 10-Year study aims to map childhood infections in chinese ICUs
Knowledge-focused Recruiting nowThis study will collect data from 2,000 children admitted to pediatric intensive care units (PICUs) with severe infections across major Chinese cities. Over 10 years, researchers will track which germs cause these infections, how they are treated, and patient outcomes. The goal i…
Sponsor: Children's Hospital of Fudan University • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:05 UTC
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Which antibiotic combo is kinder to kidneys? new study aims to find out
Knowledge-focused Recruiting nowThis study looks at two common antibiotic combinations given to hospitalized adults with infections: vancomycin plus piperacillin-tazobactam, or vancomycin plus cefepime. The goal is to see if one is less likely to cause kidney injury than the other, using more sensitive markers …
Phase: PHASE4 • Sponsor: University of Pennsylvania • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:05 UTC
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1,000 fever patients to be tracked for clues to pneumonia risk
Knowledge-focused Recruiting nowThis study will follow 1,000 adults who come to fever clinics with a respiratory infection. Researchers will collect data on symptoms, lab tests, and chest scans at the start, then check in over time to see who develops pneumonia or other complications. The goal is to better unde…
Sponsor: Fudan University • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:03 UTC
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Simple tools aim to curb antibiotic overuse in kyrgyzstan
Knowledge-focused Recruiting nowThis study in Kyrgyzstan is testing whether using a rapid C-reactive protein (CRP) blood test and giving patients an information leaflet can help doctors prescribe fewer antibiotics for respiratory infections like coughs and sore throats. About 1050 adults will be randomly assign…
Phase: NA • Sponsor: Rigshospitalet, Denmark • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:01 UTC
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Sweat sensors could replace needles for drug monitoring
Knowledge-focused Recruiting nowThis pilot study is testing whether a smart wristband can accurately measure drug levels in sweat compared to standard blood tests. Researchers will collect sweat, saliva, and blood samples from 100 patients with chronic or infectious diseases who are taking medications like cycl…
Sponsor: City of Hope Medical Center • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:56 UTC
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New study aims to spot sepsis faster in ERs
Knowledge-focused Recruiting nowThis study is looking for new ways to diagnose sepsis, a life-threatening reaction to infection, earlier in the emergency room. Researchers will study the immune responses of 3,300 adults with suspected infections to find patterns that signal sepsis. The goal is to improve diagno…
Sponsor: Amsterdam University Medical Centers (UMC), Location Academic Medical Center (AMC) • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC