Syphilis
MONDO:0005976A contagious bacterial infection caused by the spirochete Treponema pallidum. It is a sexually transmitted disorder, although it can also be transmitted from the mother to the fetus in utero. Typically, it is initially manifested with a single sore which heals without treatment. If the infection is left untreated, the initial stage is followed by skin rash and mucous membrane lesions. A late stage follows, which is characterized by damage of the internal organs, including the nervous system.
Also known as: Treponema pallidum caused disease or disorder, Treponema pallidum disease or disorder, Treponema pallidum infectious disease
62 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsSub-types
Broader categories
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One-Stop clinic aims to cut infections in veterans with opioid disorder
Disease control Not yet recruitingThis study tests a new care model for veterans with opioid use disorder that combines infectious disease screening and treatment with their usual medication-assisted therapy in a single appointment. The goal is to make it easier for veterans to get tested and treated for infectio…
Phase: NA • Sponsor: VA Office of Research and Development • Aim: Disease control
Last updated Jun 27, 2026 12:23 UTC
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New hope for newborns: simpler syphilis treatment on trial
Disease control Not yet recruitingThis study tests whether a 10-day course of oral amoxicillin works as well as a single injected dose of penicillin to treat congenital syphilis in newborns up to 30 days old. About 374 infants across 12 U.S. sites will be randomly assigned to one of the two treatments. The goal i…
Phase: PHASE4 • Sponsor: University of Alabama at Birmingham • Aim: Disease control
Last updated Jun 27, 2026 11:00 UTC
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Quick syphilis test at family planning visits studied in Hawai'i
Diagnosis Not yet recruitingThis study looks at whether offering a rapid syphilis test during family planning visits (for birth control or abortion) is practical and acceptable to patients. About 70 participants will get a fingerstick test with results in 10-15 minutes, instead of waiting days. The goal is …
Sponsor: Queen's Medical Center • Aim: Diagnosis
Last updated Jul 17, 2026 00:00 UTC
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One fingerstick, three infections: new rapid test under study
Diagnosis Not yet recruitingThis study will test a new rapid device called TruPlex that checks for HIV, Hepatitis B, and Syphilis using a single fingerstick blood sample. About 500 adults at risk for these infections will take part. Researchers want to see if the test is accurate and easy for trained staff …
Phase: NA • Sponsor: bioLytical Laboratories • Aim: Diagnosis
Last updated Jun 27, 2026 12:29 UTC
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Quick ER test could spot HIV and syphilis in pregnant women, saving babies
Diagnosis Not yet recruitingThis study will test a rapid fingerstick test for HIV and syphilis in pregnant women who come to the emergency department without prior prenatal care. Researchers want to see if offering this test leads to more women being diagnosed and starting treatment right away. The goal is …
Phase: NA • Sponsor: The University of Texas Health Science Center, Houston • Aim: Diagnosis
Last updated Jun 27, 2026 12:06 UTC
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AI app aims to help frontline workers diagnose neglected skin diseases
Diagnosis Not yet recruitingThis study tests whether a mobile app using artificial intelligence can help frontline health workers in sub-Saharan Africa better diagnose skin-related neglected tropical diseases, like leprosy and scabies. Researchers will collect images from dermatologists to train the AI, the…
Phase: NA • Sponsor: Kenya Medical Research Institute • Aim: Diagnosis
Last updated Jun 27, 2026 12:04 UTC
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New All-in-One test could save thousands of babies from infections
Diagnosis Not yet recruitingThis study will check if a new device called MagIA H3S can accurately detect HIV, hepatitis B, hepatitis C, and syphilis in pregnant women in the Democratic Republic of the Congo. About 7,500 pregnant women will take part. The goal is to see if this quick test works as well as st…
Sponsor: Gardiens de Vies • Aim: Diagnosis
Last updated Jun 27, 2026 09:02 UTC
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New 10-Minute syphilis test could save mothers and babies in uganda
Diagnosis Not yet recruitingSyphilis affects about 1 in 25 pregnant women in Uganda and can harm both mother and baby if untreated. This study will test a new rapid test that gives results in 10 minutes, comparing it to standard lab tests that take hours or days. Researchers will enroll 24 mothers and their…
Sponsor: St George's, University of London • Aim: Diagnosis
Last updated Jun 26, 2026 17:22 UTC
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Could a single pill after sex stop STIs in women?
Prevention Not yet recruitingThis trial tests whether taking a single dose of the antibiotic doxycycline within 24 hours of condomless sex can prevent bacterial sexually transmitted infections (STIs) like chlamydia, gonorrhea, and syphilis in women aged 18–35 at increased risk. Participants are randomly assi…
Phase: PHASE4 • Sponsor: Tulane University • Aim: Prevention
Last updated Jul 17, 2026 00:00 UTC
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New Ultrasound-Guided IV could spare newborns painful needle sticks
Symptom relief Not yet recruitingThis study compares two types of IV catheters in 104 newborns with congenital syphilis who need 10 days of antibiotics. One group gets a standard short catheter, the other a longer catheter placed using ultrasound by a specialized nurse. The goal is to see which lasts longer and …
Phase: NA • Sponsor: Hospital de Clinicas de Porto Alegre • Aim: Symptom relief
Last updated Jun 27, 2026 12:31 UTC
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Free sexual health Check-Ups: will they satisfy young people?
Knowledge-focused Not yet recruitingThis study looks at how satisfied young people and those with low incomes are with free HIV and STI testing and counselling in Lucerne and Zurich. Around 1,800 participants will fill out a questionnaire after their visit. The goal is to see if these free services meet people's ne…
Sponsor: University of Zurich • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:05 UTC
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Rapid STI tests for Moms-to-Be: a game changer?
Knowledge-focused Not yet recruitingThis study tests whether point-of-care STI tests, which give results in about 10 minutes, can speed up treatment for pregnant women compared to standard lab tests. About 756 pregnant women at Grady Memorial Hospital will either get the rapid tests or standard testing. The goal is…
Phase: NA • Sponsor: Emory University • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:05 UTC
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Are ICU patients getting the right antibiotic dose? new study aims to find out
Knowledge-focused Not yet recruitingThis study looks at whether standard antibiotic doses are effective for ICU patients on ECMO (heart-lung support) or kidney dialysis. Researchers will measure drug levels in 40 adults with serious infections. The goal is to see if dosing adjustments are needed to avoid under- or …
Sponsor: Fondazione IRCCS Policlinico San Matteo di Pavia • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:04 UTC
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New study aims to bring mental health support to people with neglected skin diseases in ghana
Knowledge-focused Not yet recruitingThis study will test a new way to care for people in Ghana who have both a neglected tropical skin disease (like leprosy or Buruli ulcer) and mental health challenges like depression or anxiety. Researchers will work with 200 affected adults and local health workers to create a G…
Phase: NA • Sponsor: Liverpool School of Tropical Medicine • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:59 UTC