Tick-borne infectious disease

This study tests an experimental mRNA vaccine (mRNA-1982) designed to prevent Lyme disease, which is spread by tick bites. About 350 healthy adults aged 18 to 70 will receive either the vaccine or a placebo to check for safety and immune response. The goal is to find the best dos…

This study tests whether a fifth dose of Pfizer's Lyme disease vaccine (VLA15) is safe and boosts immunity in people who already received four doses. About 1,700 healthy volunteers aged 7 and older will get either the vaccine or a saltwater shot. Researchers will compare side eff…

This study tests whether the steroid dexamethasone can reduce brain damage in adults hospitalized with tick-borne encephalitis. Researchers will compare disability outcomes in 200 patients who receive either dexamethasone or a placebo. The goal is to see if this treatment lowers …

This trial is testing whether a 7-day course of doxycycline works as well as the standard 14-day course for people with multiple erythema migrans, a sign of early Lyme disease. About 200 participants will be randomly assigned to one of the two treatment durations. Researchers wil…

This 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…

This 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 …

This 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…

This study aims to develop a better blood test for early Lyme disease in children. Current tests often miss early infections or give false positives. Researchers will also study the immune response and the types of Lyme bacteria involved. About 500 children with suspected Lyme di…

This study tests a new pill called TP-05 (lotilaner) to see if it can prevent Lyme disease in healthy adults who are often around ticks. The pill is already used in pets to kill ticks. Researchers will give either a low dose, high dose, or placebo to 700 volunteers and watch for …

This study tests a small, non-invasive device that gently stimulates a nerve in the ear (taVNS) to see if it is safe and tolerable for people with persistent symptoms after Lyme disease treatment. The trial will enroll 24 adults who still have symptoms like fatigue or pain months…

This study tests a new way to treat brain fog in people with post-treatment Lyme disease. Participants will play computer-based thinking games at home while receiving either real or fake brain stimulation (tDCS) for 4 weeks. Researchers will check if the active stimulation improv…

This study tests a dietary supplement called lumbrokinase in 120 adults with Long Covid, post-treatment Lyme disease syndrome, or ME/CFS. Participants take the supplement daily for 6 weeks. The goal is to see if it improves overall health and quality of life, as measured by a sim…

This study investigates whether the bacteria causing Lyme disease can survive antibiotic treatment and cause ongoing symptoms. Researchers will follow 700 participants, including those with chronic Lyme disease, recovered individuals, and healthy volunteers, using blood tests, sp…

This 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…

This study explores the real-life experiences of people who had Lyme disease during or before pregnancy and are now raising children. Participants fill out surveys about their health, mental well-being, and child development, then take part in an interview to share their personal…

This 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…

This study follows 40 pregnant women with Lyme disease to see how the infection might affect their baby's development. Researchers will monitor pregnancies and check infant growth, thinking, and motor skills from birth to 18 months. The goal is to learn if Lyme exposure in the wo…

This study follows 500 people with active Lyme disease to learn more about the infection. Participants receive standard FDA-approved treatments and undergo tests like blood draws and leukapheresis. The goal is to explore biological markers, track clinical outcomes, and understand…

This study looks at how healthy people's skin and immune system respond to tick bites. Researchers will place clean, lab-bred ticks on volunteers' skin and take small skin samples and blood to track changes. The goal is to understand tick resistance and help design future vaccine…

This study looks at whether what patients expect before treatment for early Lyme disease (a red rash called erythema migrans) influences how well they recover. Researchers will follow 200 patients for up to a year, checking for lingering symptoms and comparing them to healthy peo…

This 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…

This 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, …

This study looks at what happens in the body right after a tick bite. Researchers want to learn why some people develop a food allergy to red meat, called alpha-gal syndrome. About 100 adults who have been bitten by a tick will donate blood and their tick for testing. The goal is…

This 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…

This study is tracking 600 children and adults in Sweden who may have tick-borne diseases. Researchers will monitor their health over six months to better understand symptoms, improve diagnosis, and develop clearer treatment guidelines. The goal is to help doctors manage these in…

This 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 …

This 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…

This 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 …

This study is building a large registry and biorepository of 5,000 adults with various rheumatic diseases like rheumatoid arthritis, lupus, and scleroderma. Researchers at Yale University will collect medical data and biological samples over time to better understand these condit…

This study will test 10,000 people in Cambodia for 57 different infectious diseases, including dengue, flu, and malaria. Researchers want to understand how these diseases spread and who is at risk. The goal is to give local health authorities the information they need to create b…

This study looks at cases of severe Lyme disease (disseminated borreliosis) in patients who have received anti-CD20 therapy, a type of immune-suppressing treatment. Researchers want to describe the symptoms, severity, and progression of the infection in these patients. The study …

This study looks back at cases of recurrent borreliosis, a bacterial infection spread by ticks or lice, diagnosed in France between 2013 and 2025. Researchers will describe the symptoms, where patients got infected, which Borrelia species caused the illness, and how it was diagno…

This study collects information from about 100 adults in Alsace who have had a confirmed case of human anaplasmosis, a bacterial infection spread by ticks. Researchers want to learn more about how common it is, what symptoms people have, and how serious it can be. The goal is to …

This study follows 209 children and adults hospitalized with tick-borne encephalitis (TBE) in the Czech Republic for one year after discharge. Researchers track symptoms like fatigue, headaches, memory problems, and weakness to see how long they last and who needs extra support. …

This 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…

This 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…

This study surveys 100 doctors and trainees in France to assess their knowledge of tick-borne encephalitis, a rare but serious viral infection spread by ticks. The goal is to see if doctors in high-risk areas are more aware than those elsewhere, and to identify gaps that could im…