Active clinical trials for "Escherichia coli Infections"

Polio is a serious disease that can cause paralysis and death. It is caused by a virus and can be prevented by vaccine. The World Health Organization's (WHO) Global Polio Eradication Initiative is trying to get rid of all polio disease around the world. Researchers want to help by testing a new vaccine. In many countries, people are vaccinated with oral polio vaccine (OPV) given by mouth during childhood. OPV is good at giving immunity (protection from polio) in the body and the gastrointestinal (GI) tract. Immunity in the GI tract is called mucosal immunity. The downsides of using OPV are that it can be shed into the environment in people's feces after vaccination where it can infect people who are not vaccinated, and it can cause paralysis in 2-4 of every one million children vaccinated with OPV. The United States (U.S.) stopped giving any OPV to people for vaccinations in the 1990's. Since then, a polio vaccine called inactivated polio vaccine (IPV) is given as an injection for routine childhood immunizations in the U.S. You cannot get polio infection from IPV and it will not be shed into the environment. In 2016, the WHO started a plan to help other countries gradually get rid of OPV. The downside of using IPV by itself is that, unlike OPV, it doesn't give enough mucosal immunity to protect people living in places where there is still polio. There are also supply shortages of IPV, which is a problem if there are outbreaks of polio. For the supply of IPV to help more people, it is safe and effective to use a tiny dose of IPV injected under the top layer of skin (intradermal or ID injection) rather than getting the full dose in the muscle. This is called a fractional dose of IPV, or fIPV. To help stop using OPV globally, a better fIPV vaccine is needed. fIPV vaccine needs a substance to help stimulate a mucosal immune response. dmLT is a substance that has been shown to stimulate a mucosal immune response. It has been shown to be safe and effective in both humans and animals, both by itself and when given with other vaccines. This study will test a mixture of fIPV-dmLT given intradermally (under the outer layer of the skin). This is the first study done in humans to give this combination intradermally. The IPV vaccine has already been approved by the FDA. The fIPV-dmLT vaccine has not been approved by the FDA.

This study is to evaluate lot-lot consistency of Recombinant Hepatitis E Vaccine (Escherichia Coli) Hecolin®.

This study will evaluate the safety of a prototype Coli surface antigen 6 (CS6) subunit vaccine (CssBA) alone or in combination with Escherichia coli double mutant heat labile toxin (dmLT) given by intramuscular (IM) injection.

The Supertowel is a microfiber towel treated with a permanent anti-microbial bonding and has been designed as a soap alternative in emergency situations.The treated fabric must be dipped in water and then rubbed against the hands so that pathogens will be transferred to the fabric where they will be killed. Over the last two years the investigators have been able to prove, under controlled laboratory conditions, that hand cleaning with the Supertowel is more efficacious than handwashing soap and water. Another field study conducted by the investigators in a refugee camp in Northern Ethiopia indicated that the Supertowel is an acceptable and desirable product among crisis-affected populations and is likely to result in more frequent handwashing in these difficult circumstances. The aim of this study is to develop greater evidence on whether the Supertowel remains is as efficacious when used under conditions which mimic "real-world hand cleaning conditions". This will be tested through a set of controlled laboratory experiments with healthy volunteers in India.

This is a randomized, double-blind, placebo-controlled clinical trial performed in Egyptian children 6-18 months of age. The primary aim of the study is to determine the protective efficacy of an oral, inactivated whole-cell enterotoxigenic Escherichia coli (ETEC) vaccine against diarrhea associated with excretion of ETEC that express a vaccine-shared antigen over a one year period of follow-up by active surveillance. The vaccine consists of a mixture of five formalin-killed ETEC bacteria expressing prevalent ETEC colonization factors and recombinant cholera toxin B-subunit (killed ETEC/rCTB vaccine). The placebo preparation is heat-killed Escherichia coli K-12 bacteria.

This is a open label, randomized phase VI study, to assess the safety and immunogenicity of co-administration of Hepatitis E vaccine with Hepatitis B vaccine. The concomitant group (n =300) received Hepatitis B vaccine concomitantly with Hepatitis E vaccine at day 1 and months 1 and 6; The nonconcomitant group (n =150) received Hepatitis E vaccine at at day 1 and months 1 and 6. Another nonconcomitant group (n=150) received Hepatitis B vaccine at at day 1 and months 1 and 6. Anti-HEV IgG and HBsAb were determined. Injection-site and systemic adverse events (AEs) were monitored for 30 days after any vaccination; serious AEs were monitored throughout the study.

A Phase 1 dose escalating study of ETEC candidate vaccine to determine safety and immunogenicity of a multi-dose regimen in healthy adult volunteers. The study will be conducted at Cincinnati Children's Hospital Medical Center (CCHMC). The primary objectives assess the safety and tolerability of dmLT vaccine when administered in three doses sublingually over a range of dosages in healthy adult subjects. The secondary objectives assess long-term safety follow-up from immunization through Month 7 post vaccination, following three SL doses of dmLT vaccine over a range of dosages and comparing with three doses of a comparable dosage of oral vaccine. The study subject population is 52 healthy adult male and female subjects, ages 18 to 45. Subject participation duration is approximately 8 months with study duration of approximately 1.5-2 years, including 6-7 months of follow-up.

The purpose of the study is to determine if immunization with a chimeric E. coli protein, dsc14CfaE-sCT2/LTB5, is safe and immunogenic when administered by vaccination under the skin.

The purpose of this study is to learn if a new candidate vaccine (dmLT) against ETEC (E. coli infection) is safe. This vaccine will be tested to see what effects it has on the body and the ability of the vaccine to help the body resist disease. Researchers want to find the highest dose of dmLT vaccine that can be given without causing severe side effects. Most E. coli bacteria are harmless to humans and can even be beneficial. However, some are harmful, and can cause diarrhea. About 32 healthy adults, ages 18-45, will participate in this study. This study will require volunteers to stay in the research facility for several nights. Participants will be assigned to receive 1 of 4 vaccine doses by mouth. Study procedures include: stool samples, blood samples, and documenting side effects. Participants will be involved in study related procedures for about 8 months.

The purpose of the study is to determine the efficacy of a vaccine against enterotoxigenic E. coli (ETEC)-caused diarrhea.