Pneumocystosis
MONDO:0019121Human pneumocystosis is caused by an infectious agent, which (after recent nomenclature and taxonomy revisions) is now classed as the fungus Pneumocystis jiroveci. The prevalence is unknown. Pneumocystis jiroveci is an opportunistic infectious agent, developing in immunosuppressed patients. It is an air-borne infection, localized to the lungs. However, extrapulmonary involvement is seen in AIDS patients. The disease manifests progressively with coughing, respiratory problems (dyspnea) and fever, followed by acute respiratory insufficiency and death within a few weeks in untreated cases. The most reliable diagnostic method is bronchoalveolar lavage. The treatment of choice is cotrimoxazole.
Also known as: PCP, PJP, Pneumocystis, Pneumocystis Pneumonia, Pneumocystis carinii pneumonia, Pneumocystis jirovecii pneumonia, Pneumocystis pneumonia, pneumocystosis
67 clinical trials for this condition and its sub-types.
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Could a lower dose of a common antibiotic be safer and just as effective for a deadly pneumonia?
Disease control Not yet recruitingThis study looks at whether a lower dose of the antibiotic TMP-SMX works as well as the standard dose for treating a serious lung infection called Pneumocystis pneumonia (PCP) in people who do not have HIV. The standard dose often causes side effects in more than half of patients…
Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University • Aim: Disease control
Last updated Jul 16, 2026 00:00 UTC
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Can a cancer drug wake up immune cells to beat HIV-Related infections?
Disease control Not yet recruitingThis study tests a drug called Sintilimab, which is normally used for cancer, to see if it can help people with HIV who have infections that won't go away with standard treatment. The drug works by 'waking up' exhausted immune cells. Fifty adults with HIV and a hard-to-treat infe…
Phase: PHASE1, PHASE2 • Sponsor: Shanghai Public Health Clinical Center • Aim: Disease control
Last updated Jun 27, 2026 12:31 UTC
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New study seeks best backup plan for deadly pneumonia in immunocompromised patients
Disease control Not yet recruitingThis study looks at which second-choice treatment works best for a serious lung infection called PCP when the usual antibiotic cannot be used due to allergies, side effects, or failure. About 416 adults with weakened immune systems (from HIV, transplants, cancer, or other causes)…
Phase: PHASE4 • Sponsor: McGill University Health Centre/Research Institute of the McGill University Health Centre • Aim: Disease control
Last updated Jun 27, 2026 08:13 UTC
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Shorter steroid course for severe PCP? new trial aims to find out
Disease control Not yet recruitingThis study looks at how long steroids should be given to adults with severe Pneumocystis pneumonia (PCP), a serious lung infection common in people with weakened immune systems. About 416 participants who improve within 10 days will either stop steroids early or continue for 21 d…
Phase: PHASE4 • Sponsor: McGill University Health Centre/Research Institute of the McGill University Health Centre • Aim: Disease control
Last updated Jun 27, 2026 08:09 UTC
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Could steroids slash death rates from a rare pneumonia?
Disease control Not yet recruitingThis study tests whether adding corticosteroids (low or moderate dose) to standard care can reduce deaths from severe Pneumocystis pneumonia (PJP) in non-HIV patients in the ICU. PJP has a very high death rate of 60-80% in this group. The trial will compare two steroid doses agai…
Phase: PHASE3 • Sponsor: Qingyuan Zhan • Aim: Disease control
Last updated Jun 26, 2026 14:24 UTC
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Can steroids save lives in severe pneumonia? new trial aims to find out
Disease control Not yet recruitingThis trial tests whether low or moderate doses of the steroid methylprednisolone can reduce deaths in patients with severe community-acquired pneumonia. It will enroll 1500 ICU patients with pneumonia caused by adenovirus or Pneumocystis jirovecii. The study uses an adaptive desi…
Phase: PHASE2, PHASE3 • Sponsor: Qingyuan Zhan • Aim: Disease control
Last updated Jun 26, 2026 13:09 UTC
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Breath sniff test could spot COVID and flu in hospital patients
Diagnosis Not yet recruitingThis study tests whether analyzing chemicals in a person's breath can quickly identify serious respiratory infections like COVID-19, flu, and Legionella in hospitalized patients. Researchers will collect breath samples from 777 adults using a simple bag, then analyze them in a la…
Phase: NA • Sponsor: Hospices Civils de Lyon • Aim: Diagnosis
Last updated Jun 27, 2026 08:12 UTC
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Breathalyzer could replace PCR for respiratory infections
Diagnosis Not yet recruitingThis study aims to see if analyzing chemicals in a person's breath can rapidly detect respiratory infections like COVID-19 or the flu. Researchers will collect breath samples from 1,665 adults with symptoms and healthy volunteers. If successful, this non-invasive test could offer…
Phase: NA • Sponsor: Hospices Civils de Lyon • Aim: Diagnosis
Last updated Jun 27, 2026 08:11 UTC
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Quick test in your doctor's office could fight serious lung infections
Diagnosis Not yet recruitingThis study tests whether a rapid PCR test done right in the clinic can help doctors diagnose and treat acute respiratory infections faster. Over 16,000 adults at risk of severe illness will take part. The goal is to see if this approach lowers rates of respiratory failure and hos…
Phase: NA • Sponsor: Capital Medical University • Aim: Diagnosis
Last updated Jun 26, 2026 15:00 UTC
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Can a lower dose of antibiotics prevent pneumonia just as well after kidney transplant?
Prevention Not yet recruitingThis study tests whether a lower dose of the antibiotic TMP-SMX works as well as the standard dose to prevent a serious lung infection called PJP in people who have just had a kidney transplant. About 1,084 adult first-time kidney transplant recipients will take either a low or s…
Phase: PHASE4 • Sponsor: Anhui Provincial Hospital • Aim: Prevention
Last updated Jun 27, 2026 13:00 UTC
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Could a light device stop COVID and flu? new trial aims to find out.
Prevention Not yet recruitingThis trial tests a handheld light device (RD-X19) to see if using it for 5 minutes every other day can prevent upper respiratory infections like COVID-19 and flu. It involves 130 military personnel and their families at a single base. Half will get the real device, half a sham de…
Phase: NA • Sponsor: David Moss • Aim: Prevention
Last updated Jun 27, 2026 12:38 UTC
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Could a common steroid prevent a deadly complication in AIDS patients?
Prevention Not yet recruitingThis study tests whether a short course of the steroid prednisolone can prevent paradoxical immune reconstitution inflammatory syndrome (IRIS) in people with AIDS who have low CD4 counts and are starting HIV treatment. About 131 participants will receive either prednisolone or no…
Phase: NA • Sponsor: Shanghai Public Health Clinical Center • Aim: Prevention
Last updated Jun 27, 2026 12:29 UTC
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New syrup aims to soothe coughs in just two days
Symptom relief Not yet recruitingThis study looks at how well and how safely SIROPSEDAL syrup works for acute cough caused by colds or upper respiratory infections. About 124 children and adults will take the syrup as prescribed by their doctor and report their cough severity over one week. The main goal is to s…
Sponsor: Laboratoires Elerte • Aim: Symptom relief
Last updated Jun 27, 2026 13:03 UTC
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Quick test could transform ER care for kids with coughs and colds
Symptom relief Not yet recruitingThis study looks at whether a fast, bedside test (SPOTFIRE) can help doctors better treat children with respiratory infections in the emergency department. About 720 children aged 2 months to 18 years will be randomly assigned to either get the rapid test or standard care. The go…
Phase: NA • Sponsor: BioMérieux • Aim: Symptom relief
Last updated Jun 27, 2026 09:10 UTC
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Massive dutch study reveals true toll of respiratory infections on hospitals
Knowledge-focused Not yet recruitingThis study examines data from up to 70,000 patients hospitalized with respiratory tract infections in Dutch hospitals between 2018 and 2026. Researchers will analyze how long patients stay, how many need intensive care, and the overall costs. The goal is to help improve hospital …
Sponsor: LOGEX • Aim: Knowledge-focused
Last updated Jul 10, 2026 00:00 UTC
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Vitamin d levels may predict danger in sick kids
Knowledge-focused Not yet recruitingThis study looks at vitamin D levels in 63 critically ill children (ages 1 month to 12 years) admitted to the ICU with severe breathing infections. Researchers will measure vitamin D in the first 24 hours and compare it to how severe the infection is and the risk of death. The go…
Sponsor: Assiut University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:31 UTC
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AI tool for doctors: help or hindrance? new study investigates
Knowledge-focused Not yet recruitingThis study looks at how different features of an AI system affect the way primary care doctors diagnose and treat respiratory infections. About 3,000 doctors in China will use a web-based tool with various AI features, such as automated data entry or stepwise medication suggestio…
Phase: NA • Sponsor: Huazhong University of Science and Technology • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:05 UTC
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Gut health linked to Kids' respiratory infections in new study
Knowledge-focused Not yet recruitingThis study will examine gut bacteria, immune markers, and nutrient levels in 120 children with different respiratory health conditions, including pneumonia and recurrent infections, compared to healthy kids. By analyzing stool samples and health data, researchers hope to understa…
Sponsor: Min-Tze LIONG • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:01 UTC
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Blood test could unlock secrets of lung disease immunity
Knowledge-focused Not yet recruitingThis study looks at how the immune system works in people with lung diseases like asthma, COPD, pneumonia, and tuberculosis. Researchers will take a single blood sample from 100 adults to study immune cell changes during inflammation and infection. Participants won't receive dire…
Sponsor: Research Center Borstel • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:01 UTC
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Ultrasound could predict hospital stay for kids with lung infections
Knowledge-focused Not yet recruitingThis study will observe 300 children and young adults (ages 0-20) with respiratory tract infections to see if chest ultrasound can predict their outcomes, such as need for hospitalization or ICU care. Researchers will use an ultrasound score and combine it with clinical data to s…
Sponsor: Fondazione Policlinico Universitario Agostino Gemelli IRCCS • Aim: Knowledge-focused
Last updated Jun 26, 2026 13:07 UTC