Viral respiratory tract infection
MONDO:0024352A respiratory tract infection caused by a virus. Viruses represent the most common causes of upper and lower respiratory tract infections and include rhinoviruses, influenza viruses, parainfluenza viruses, and respiratory syncytial virus.
Also known as: viral respiratory tract infection
554 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsSub-types
Broader categories
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New RSV vaccine for infants shows promise in major trial
⭐️ VACCINE ⭐️ TerminatedThis study tested an experimental RSV vaccine given to healthy infants at 6 and 12 months old alongside their regular vaccines. The goal was to see if the RSV vaccine still worked well when given at the same time. About 2,200 babies took part, but the study was stopped early.
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: ⭐️ VACCINE ⭐️
Last updated Jun 27, 2026 09:01 UTC
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RSV nasal vaccine trial for kids halted – what we know
⭐️ VACCINE ⭐️ TerminatedThis phase 3 study tested an intranasal RSV vaccine in about 6,300 healthy children aged 6 to 22 months. The goal was to see if two doses of the nasal spray could prevent lower respiratory tract infections caused by RSV. The trial was terminated early, so final results are not av…
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: ⭐️ VACCINE ⭐️
Last updated Jun 27, 2026 09:01 UTC
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Could a Lower-Dose RSV vaccine protect babies just as well?
⭐️ VACCINE ⭐️ TerminatedThis study tested a nasal spray RSV vaccine in nearly 1,000 healthy infants and toddlers aged 6 to 22 months. The goal was to see if a lower dose works as well as the standard dose and to check safety across different doses. The trial was ended early, so final results are not ava…
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: ⭐️ VACCINE ⭐️
Last updated Jun 27, 2026 09:01 UTC
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Could a simple pill tame RSV? new trial tests obeldesivir
Disease control TerminatedThis phase 2 study tests whether an oral antiviral pill called obeldesivir can safely shorten RSV symptoms in adults who are not hospitalized but are at higher risk for severe disease (e.g., those aged 60+ or with chronic lung conditions). Participants take the pill or a placebo,…
Phase: PHASE2 • Sponsor: Gilead Sciences • Aim: Disease control
Last updated Jul 02, 2026 00:00 UTC
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Placenta cells tested as COVID fighter – but trial stopped early
Disease control TerminatedThis early-phase trial tested a new therapy called CYNK-001, which uses natural killer cells from the placenta to fight COVID-19. It enrolled only 7 adults with moderate COVID-19. The study was terminated early, so we have limited information on safety and effectiveness.
Phase: PHASE1, PHASE2 • Sponsor: Celularity Incorporated • Aim: Disease control
Last updated Jun 28, 2026 00:00 UTC
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New oral pill aims to fight RSV in adults
Disease control TerminatedThis study tests an oral drug called AK0529 (Ziresovir) in adults aged 18 to 75 with respiratory syncytial virus (RSV) infection. Participants receive either the drug or a placebo, and researchers measure how well symptoms improve and track any side effects. The goal is to see if…
Phase: PHASE2 • Sponsor: Shanghai Ark Biopharmaceutical Co., Ltd. • Aim: Disease control
Last updated Jun 27, 2026 14:01 UTC
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Could a simple gas stop COVID-19 from getting worse?
Disease control TerminatedThis study tested whether breathing in nitric oxide gas could keep mild-to-moderate COVID-19 from becoming severe. Researchers enrolled 62 hospitalized adults who were breathing on their own. The goal was to see if the gas reduced the need for a breathing tube. The trial was stop…
Phase: PHASE2 • Sponsor: Massachusetts General Hospital • Aim: Disease control
Last updated Jun 27, 2026 12:00 UTC
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Experimental drug aims to keep viral pneumonia patients out of hospital
Disease control TerminatedThis Phase 2 trial tested the drug silmitasertib (CX-4945) plus standard care in adults with pneumonia caused by COVID-19 or influenza. The goal was to see if the drug could reduce the need for hospitalization or prevent death. The study planned to enroll 120 people but was termi…
Phase: PHASE2 • Sponsor: Senhwa Biosciences, Inc. • Aim: Disease control
Last updated Jun 27, 2026 08:09 UTC
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New RSV drug tested in kids – but trial halted early
Disease control TerminatedThis study tested the safety and dosing of sisunatovir, an experimental antiviral drug, in infants and children up to 5 years old with RSV lower respiratory tract infection. Ten participants received either the drug or a placebo. The goal was to find the right dose for future stu…
Phase: PHASE1 • Sponsor: Pfizer • Aim: Disease control
Last updated Jun 27, 2026 08:07 UTC
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RSV pill study halted early: what we know
Disease control TerminatedThis study tested an oral drug called sisunatovir for treating RSV in adults who were not hospitalized but had a high risk of severe illness. Participants took either the drug or a placebo for 5 days. The study was terminated early, so results are limited.
Phase: PHASE2, PHASE3 • Sponsor: Pfizer • Aim: Disease control
Last updated Jun 27, 2026 07:56 UTC
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Experimental cell therapy targets deadly childhood brain cancer
Disease control TerminatedThis early-phase trial tested a new immunotherapy approach for children with DIPG, a rare and aggressive brain stem tumor. After standard radiation and chemotherapy, patients received special vaccines and immune cells designed to attack the tumor. The study was small (11 particip…
Phase: PHASE1 • Sponsor: University of Florida • Aim: Disease control
Last updated Jun 27, 2026 07:55 UTC
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Super-Sized flu shot for tots? study tests higher dose
Prevention TerminatedThis study tested whether a high-dose flu vaccine works better than the standard dose in preventing the flu in children aged 6 to 35 months. About 100 children took part, receiving either the high-dose or standard-dose shot. The study was stopped early, so results are limited.
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: Prevention
Last updated Jun 27, 2026 08:06 UTC
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Super-Sized flu shot tested for Seniors' heart and lung protection
Prevention TerminatedThis study compared a high-dose flu vaccine to the standard-dose shot in over 33,000 adults aged 65 and older. The goal was to see if the high-dose version could better prevent hospitalizations for heart and lung problems. The trial was terminated early, so the full picture is no…
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: Prevention
Last updated Jun 26, 2026 17:31 UTC
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Mental health sessions may boost vaccine uptake in latinx communities
Prevention TerminatedThis study tested whether adding vaccine discussions to routine behavioral health visits could reduce hesitancy and increase COVID-19 and flu shots among Latinx adults with mental illness. Clinicians used motivational interviewing and could offer a warm handoff to a nurse for vac…
Phase: NA • Sponsor: Boston College • Aim: Prevention
Last updated Jun 26, 2026 17:00 UTC
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Egg-Free flu vaccine tested in kids: could it be just as good?
Prevention TerminatedThis study compared a newer recombinant flu vaccine (RIV4, also called Supemtek or Flublok Quadrivalent) to the standard egg-based flu vaccine in 366 children aged 3 to 8 years. The goal was to see if the recombinant vaccine produced a similar immune response and was as safe. The…
Phase: PHASE3 • Sponsor: Sanofi Pasteur, a Sanofi Company • Aim: Prevention
Last updated Jun 26, 2026 14:42 UTC
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RSV drug trial for kids under 5 halted early – only 4 children enrolled
Symptom relief TerminatedThis study tested an oral antiviral drug called obeldesivir in children from birth to under 5 years old who had RSV infection. The goal was to see if the drug is safe and helps reduce symptoms faster. However, the trial was stopped early and only enrolled 4 participants, so the r…
Phase: PHASE2 • Sponsor: Gilead Sciences • Aim: Symptom relief
Last updated Jun 27, 2026 13:04 UTC
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Flu vaccine study halted after just 2 volunteers
Knowledge-focused TerminatedThis study aimed to compare how the immune system responds to two different seasonal flu vaccines given at the same time. Healthy adults aged 18-49 who had not received a flu shot in at least three years were eligible. The study was terminated early and only enrolled 2 participan…
Phase: EARLY_PHASE1 • Sponsor: Washington University School of Medicine • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:01 UTC
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Sticker shock: simple reminder may cut unnecessary IV antibiotic use
Knowledge-focused TerminatedThis study tested whether placing a reminder sticker on the charts of adult hospital patients receiving IV fluoroquinolone antibiotics would encourage doctors to switch them to oral pills sooner. The trial involved 168 patients at a single hospital in Thailand. Unfortunately, the…
Phase: NA • Sponsor: Mahidol University • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:12 UTC