View clinical trials related to Typhoid Fever.
Filter by:This is a multicenter, randomized, observer-blinded, controlled, immune equivalence study of a multi-dose (MD) formulation with 2PE preservative of SK bioscience Vi-DT compared to single dose (SD) formulation without preservative of SK bioscience Vi-DT in participant (6 months - 45 years) including safety population. The study objectives are as follows: - Primary objective. Demonstrate the immune equivalence as measured by anti-Vi IgG Geometric Mean Titer (GMT) of multi dose formulation against single dose formulation of Vi-DT (18-45 year age stratum), at 4 weeks after a single dose. - Secondary objective 1. Demonstrate the immune equivalence as measured by seroconversion rates of anti-Vi IgG antibody titres of multi dose formulation against single dose formulation of Vi-DT vaccine (18-45 year age stratum) at 4 weeks after a single dose. - Secondary objective 2. Describe safety profile in all age strata combined (age 6 months - 45 years old) and in each age stratum, at 4 weeks after a single dose of SD/MD formulation/control (Meningococcal Conjugate Vaccine). There are total 5 scheduled visits as follows: - Visit 1(D-7 to 0): Screening - Visit 2(D0): Enrollment, vaccination, safety follow-up and blood collection for immunogenicity assessment (only for subjects 18 years old and above) - Visit 3(D7): Safety follow-up - Visit 4(D28): Safety follow-up and blood collection for immunogenicity assessment (only for subjects 18 years old and above) - V5(D168): Safety follow-up
This study evaluates whether XDR Typhoid fever in children can be effectively treated with monotherapy (meropenum alone), or a combination (meropenum and azithromycin).
This study evaluates the effect of an oral typhoid vaccine on disruption of the intestinal barrier and response of the immune system. Intestinal and whole-body responses will be measured in all participants before and after the vaccine.
Phase III study, Randomized, observer blind, lot to lot consistency, non inferiority to PQed typhoid conjugate vaccine and Typhoid Vi polysaccharide vaccine.
This is an open-label, non-randomized study. The purpose of this study is to better understand how vaccines against typhoid fever affect the normal immune system and bacteria in the intestine. Patients having standard-of-care colonoscopies will be divided into 3 groups: Group 1: Vivotif typhoid vaccination then colonoscopy; Group 2: Colonoscopy, then Vivotif typhoid vaccination, then follow-up colonoscopy; Group 3: Colonoscopy without vaccination. The Vivotif typhoid vaccine used in this study is licensed by the Food and Drug Administration (FDA) for travelers to developing countries. Volunteers will be asked to donate tissue, blood, saliva and stool samples for studying how the body responds to the typhoid vaccine.
The purpose of this study is to evaluate the safety and tolerability of EuTCV, in comparison to TCV (Typbar-TCV™, Bharat Biotech) and Vi-Polysaccharide vaccine (Typhim Vi®, Sanofi Pasteur) in healthy adult volunteers.
This is a Multicenter, observer-blinded, randomized, Active controlled, Phase 3 study in healthy 6 months to 45 years aged Nepalese at the time of the first vaccine dose. The study objectives are: I. Demonstrate non-inferiority of Vi-DT compared to Typbar TCV® as measured by seroconversion rates of anti-Vi IgG ELISA antibody titers, 4 weeks after single dose (pooled immunogenicity of three lots of Vi-DT) II. Demonstrate the equivalence of immunogenicity as measured by anti-Vi IgG GMT of three lots of Vi-DT vaccine 4 weeks after single dose.
This was a randomized, double-blind, ascending dose study conducted at a single clinical research center.
Typhoid fever is an infection caused by the bacteria Salmonella Typhi (S. Typhi). S. Typhi causes disease principally in developing countries where communities do not have access to safe water or adequate sanitation. It is thought to cause illness in approximately 22 million people every year and up to 200,000 deaths, mostly in children. The bacteria are spread when faeces from infected individuals contaminate food and water sources. Symptoms of infection include headache, fever and general aches and pains. If not treated properly typhoid infection can lead to severe complications and even death. In this study the investigators aim to understand more about the S. Typhi bacteria and how S. Typhi causes a bloodstream infection after it has been ingested and passed into the gut. In spite of the extensive morbidity and mortality associated with bacterial blood stream infections (BSI), comparatively little is known about the pathogenesis. At a time of increasing antimicrobial resistance and a lack of new antimicrobial agents, understanding the pathogenesis of BSI is essential for efforts directed at prevention both of Salmonella Typhi and other bacterial species, particularly those that are restricted to humans.
This is an open-label, non-randomized study. The purpose of this study is to better understand how vaccines against typhoid fever and cholera affect the normal immune system and bacteria in the intestine. Patients having standard-of-care endoscopies (colonoscopy and/or esophagogastroduodenoscopy (EGD)) will be divided into 3 groups: Group 1: Vivotif typhoid vaccination and/or Vaxchora cholera vaccination then endoscopy Group 2: Endoscopy, then Vivotif typhoid vaccination and/or Vaxchora cholera vaccination, then follow-up endoscopy Group 3: Endoscopy without vaccination. Both vaccines used in this study are licensed by the Food and Drug Administration (FDA) for travelers to developing countries. Volunteers will be asked to donate tissue, blood, saliva and stool samples for studying how the body responds to the typhoid and/or cholera vaccine.