Active clinical trials for "Zika Virus Infection"

This study will include 4 cohorts of 14 ZIKV and DENV-naïve female and male subjects, 18 - 40 years of age (total: up to 56 subjects). Within each cohort, 10 subjects will receive ZIKV and 4 subjects will receive a placebo on Study Day 0. Cohorts 1 and 2 (Dose = 10^2 PFU) will be enrolled first and will enroll only women. Cohorts 3 and 4 (Dose = 10^2 PFU) will enroll men.

This clinical study will evaluate the safety, tolerability, and reactogenicity of 2 dose levels of messenger RNA (mRNA)-1893 Zika vaccine in comparison to a placebo control in healthy participants who are flavivirus-seronegative and in participants who are flavivirus-seropositive.

The purpose of this study is to describe the side effects and immune response of a candidate vaccine that might protect against Zika. The vaccine called PIZV (purified inactivated Zika virus vaccine) is given by injection in two doses that are 28 days apart in healthy adults. Participants will receive PIZV or placebo and will be followed for 7 days after each dose and up to 6 months after dose 2.

There are hundred of arbovirus which have been shown to cause disease in humans. Their most common clinical symptoms are algo-eruptive (dengue, chikungunya, zika), hemorrhagic fever (dengue, yellow fever, Crimean-Congo hemorrhagic fever), neurological (West Nile, Zika, dengue, Japanese encephalitis) or arthritic afflictions (Chikungunya, O'nyong nyong). Dengue is a mosquito-born viral disease caused by 4 different serotypes of virus. Dengue fever (DF) is defined by the sudden onset of fever with non-specific constitutional symptoms, recovery occurring spontaneously in 3 to 7 days. The infection can sometimes progress to dengue hemorrhagic fever (DHF) characterized by a transient increase in vascular permeability provoking a plasma leakage syndrome. DHF can be complicated by shock and internal hemorrhage. Other rarer complications include encephalitis, hepatitis, rhabdomyolysis and myocarditis. There is currently no way of predicting the outcome of DF or DHF and the WHO classification lacks sufficient sensitivity and specificity to recognize and guide the management of severe forms of dengue. The pathophysiology of these forms is also poorly known. Since 2000s, the French West Indies and Guiana have become hyperendemic for dengue with simultaneous circulation of the 4 serotypes, regular large outbreaks and severe dengue including fatalities. Chikungunya is a re-emerging virus causing massive epidemics in Africa, in the Indian Ocean and Southeast Asia. The first autochthonous cases were described in French Antilles in Nov 2013. The disease typically consists of an acute illness like dengue fever with abrupt onset of a high-grade fever followed by constitutionals symptoms, poly-arthritis and skin involvement. Usually, the illness resolves in 4 to 6 weeks. However, severe clinical forms in early stage may appear and chronic clinical forms as incapacitating arthralgia which affect 40 to 60% of patients. In France, others arboviruses may cause severe emerging and re-emerging infectious diseases like Zika or West Nile. In non-immunized population these emerging diseases may cause outbreaks with specific severe clinical complications. The French interministerial mission on emerging infectious diseases coordinated by Professor Antoine Flahault, recommended such studies: large prospective multicenter cohort studies to characterize severe forms of arbovirus infections to seek predictive factors and to investigate the pathophysiology of the diseases.

In this study the investigators will follow the neurodevelopmental outcome of children with in utero ZIKV exposure who do not have microcephaly or severe abnormalities consistent with Congenital Zika Syndrome. The ZIKV-exposed children will be compared to non-ZIKV exposed controls. Children will be assessed at age 3 and 4 years using standardized neurodevelopmental assessments. Children will also have neurodevelopmental assessment at age 5 and 7 years along with a brain MRI at age 7 years.

Microcephaly associated with Congenital Syndrome of the Zika virus (SCVZ) was highlighted due to atypical structural and behavioral changes of the central nervous system. Such changes contribute to the appearance of functional impairments and difficulties of adaptation of the child to the necessary therapeutic follow-up. In this context, the search for adjuvant therapies that allow better management of these alterations has grown and, given its advantages, aquatic physiotherapy may be an auxiliary resource in the care of this population. The aquatic environment is capable of promoting a state of relaxation that, when associated with a kinesiotherapy protocol, is believed to have this potentiated effect. Thus, our objective will be to evaluate the efficacy of aquatic physiotherapy on the level of stress and muscle tone in children with microcephaly associated with SCVZ. A crossover, randomized, controlled and blind study will be carried out with children between 3 and 24 months of age, who will undergo two interventions: aquatic physiotherapy and water immersion. The evaluation of muscle tone will be performed through the Tardieu scale before and after the intervention; the physiological parameters (heart and respiratory rate, oxygen saturation and temperature) and the stress level will be evaluated before, immediately after and 30 minutes after the intervention. In addition, questionnaires will assess the child's behavioral state, level of irritation and sleep characteristics. For data normalization the Shapiro Wilk Test will be applied; the percentage values and relative frequency will be used for the descriptive analysis and for the numerical variables the values of mean and standard deviation or median and interquartile range. The paired T and ANOVA tests for repeated samples will be applied, which will analyze the intra-group time factor for the dependent variables of each individual. And for intergroup analysis, the variables may be submitted to the T-Test for independent or Mann-Whitney samples.

Zika virus (ZIKV) infection is a new emerging arbovirus disease, caused by the same vector that transmits Dengue virus, Aedes aegypti. ZIKV is a growing public health problem, rapidly spreading throughout the continents since the first epidemic was reported in the French Polynesian islands. Currently, there are several ZIKV vaccine candidates in clinical trials. However, no ZIKV therapy (biologic or small molecule) has advanced to clinical trials. Tyzivumab will be the first therapeutic in the world, specifically targeting ZIKV, to enter clinical trials. This is a Phase 1, first in human, time-lagged, parallel-group, single dose ascending (6 dose cohorts), Tyzivumab, ZIKV monoclonal antibody (mAb), study to be conducted in 24 flaviviral naïve healthy adult volunteers. Tyzivumab will be administered once through single IV infusion over 30 minutes. Total duration of study participation is estimated at approximately 98 days from the date of screening. Post-trial monitoring through weekly telephone calls will continue from Day 85 post-dose onwards for another three (3) more months. The main objective of this study is to evaluate safety of Tyzivumab in healthy adult volunteers through assessment of subject vital signs, clinical laboratory results, ECG, presence/absence of AE/SAE, PK and ADA.

This cluster randomised trial will evaluate the efficacy of Wolbachia-infected Aedes aegytpi mosquitoes in reducing dengue cases in Yogyakarta City, Indonesia

Implement a randomized controlled trial, evidence-based, culturally adapted, environmental enrichment intervention for the purpose of enhancing neurocognitive outcomes among Zika Exposed Children.

This study will estimate the cumulative incidence of Zika infection at the end of the first epidemic in the French West Indies in a sample of patients followed for HIV infection.