View clinical trials related to Infections.
Filter by:This is a Phase 1/2, randomized, observer-blind study in healthy adults. The study will evaluate the safety, reactogenicity, and immunogenicity of 3 SARS-CoV-2 self-amplifying RNA vaccine candidates against COVID-19 in adults previously vaccinated and not previously vaccinated against SARS-CoV-2.
The purpose of this Phase I controlled human infection model (CHIM) study was to determine if oral administration of a good manufacturing practice (GMP) supply of Cryptosporidium parvum oocysts (ABO809) to healthy volunteers resulted in a Cryptosporidium infection and diarrheal illness. The study measured fecal oocysts (parasitological endpoint) as well as diarrhea and associated signs and symptoms (clinical endpoint).
Background: The COVID-19 outbreak has strained the health care system. New tools are needed for diagnostic testing and monitoring of people who have the virus. Researchers want to test a device they hope can screen, detect, and monitor symptoms linked to respiratory diseases like COVID-19. Objective: To evaluate and validate a device that measures breathing, body temperature, heart rate, and tissue oxygenation. Eligibility: Healthy adults ages 18 and older with no flu-like symptoms and no current signs of infection, cough, fever, or sneezing. Design: Participants will have a physical exam. Their vital signs will be taken. Participants will sit in a chair. They will be monitored for 60 to 80 minutes while they do the following tasks: Rest for 10 minutes. They will repeat this after each task. Hold their breath for up to 2 minutes and then rest for 2 minutes. They will do this task 3 times. Pace-breathe with breathing rates of 10, 20, and 30 breaths per minute. They will do this task 2 times. Breathe air that has 5% of carbon dioxide for 5 minutes. During these tasks, data will be collected and recorded with a pulse oximeter, thermometer, respiratory belt, and spirometer. Participants will fill out questionnaires related to their daily activity (medication intake, exercise, smoking, and drinking). Participation will last for 2 to 3 hours.
The aim of the project is to study the feasibility of implementing a novel point-of-care test (POCT) for rapid detection of SARS-CoV-2 infection. A CRISPR-based detection kit would be piloted for testing of suspected SARS-CoV-2 infection in healthcare setting, with the objectives of evaluating the performance of the new test in the detection of SARS-CoV-2, and assessing the practicability of the new test for diagnosing SARS-CoV-2 infection in healthcare settings.
In this randomised controlled trial the investigators will determine whether taking iron supplements compared to placebo for 21 days alters the bacteria (microbiome) in the large intestine of non-pregnant female participants.
A multicenter, randomized, double-blind, placebo controlled comparative study to evaluate the safety, tolerability and efficacy of XC221 used at 100 mg daily and at 200 mg daily in patients with uncomplicated influenza or other acute viral upper respiratory infections (URIs) for 5 days of treatment. The primary objective of the study is to evaluate the efficacy of ХС221 at 100 mg and at 200 mg in comparison with placebo regarding its effect on the severity and duration of influenza symptoms and symptoms of other viral URIs (fever and other major signs and symptoms). The secondary objective of the study is to evaluate the safety of ХС221 at 100 mg and at 200 mg in comparison with placebo in the treatment of influenza ad other viral URIs.
Immunodeficiency associated with human immunodeficiency virus (HIV) infection could predispose people living with HIV/AIDS (PLHA) to defective serological responses following infection or vaccination. To evaluate the health outcomes of coronovirus disease-2019 (COVID-19) and HIV co-infection, PLHA and HIV-uninfected persons in Hong Kong are invited to join a study for understanding their clinical characteristics and for tracking their levels of antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) over a one-year observation period after infection or vaccination. The results could inform the development of prevention and control strategy for PLHA in response to the emerging coronavirus threats.
This clinical trial is designed to evaluate if the periodic screening for deep venous thrombosis by ultrasound of lower extremity in patients with intensive care unit (ICU) patients with COVID 19 impacts on mortality, ICU stay and total length of stay in the hospital, along with other outcomes.
Surgical removal of impacted mandibular wisdom teeth is a frequent intervention, usually accompanied by unpleasant sequelae (pain, swelling and trismus) in the postoperative period, sometimes even with possibly serious complications (dry socket/alveolar osteitis and postoperative infection at the surgical site - SSI). It is therefore advisable to use various medications and procedures to prevent or alleviate the occurrence of these sequelae and complications. Accordingly, there is a debate in the literature on the expedience of perioperative (prophylactic) use of antibiotics. It is interesting that numerous articles recommending perioperative (prophylactic) antibiotic use to patients undergoing the impacted mandibular third molar surgery may be found, as well as those providing arguments for the disagreement with such an approach, considering that its benefits do not outweigh the risks of adverse side effects, especially due to growing resistance of microorganisms towards antibiotics, which is a possible serious threat to global health. Concerning the perioperative (prophylactic) use of antibiotics for this indication, consensus has not yet been reached, and neither of the views has been verified by convincing scientific evidence. Having the aforementioned dilemma in mind, the main endpoint of the study was to determine the validity of perioperative (prophylactic) use of antibiotics as to alleviate customary sequelae and possible complications after surgical removal of impacted mandibular third molars and, at the same time, the effectiveness of newer antibiotics (moxifloxacin and cefixime) when used for this purpose. Moreover, microbiological investigations of susceptibility of the isolated microorganisms to antibiotics used in this research were performed, which could verify the clinically obtained results. With this in mind, two major contributions, based on scientifically verified results, could be expected from the research: (1) confirmation or refuting the validity of perioperative (prophylactic) antibiotic use to control sequelae or complications that could follow the impacted mandibular third molar surgery; and (2) confirmation of the efficacy of fluoroquinolones (moxifloxacin) and cephalosporins (cefixime) in controlling odontogenic infections.
This is a randomized, double-blinded, Phase 3, multi-center trial of the clinical and microbiologic response of patients with a respiratory tract infection (RTI) due to coronavirus treated with a combination of azithromycin and hydroxychloroquine. Approximately 200 patients with symptoms of an RTI who test positive for SARS-CoV-2 by polymerase chain reaction (PCR) will receive a combination of azithromycin 500 mg and hydroxychloroquine 600 mg or matching placebos for six consecutive days. There will be two treatment regimens into which patients are randomized so that all patients will receive some active therapy.