View clinical trials related to Zika Virus.
Filter by: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.
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.
Zika virus (ZIKV) infection spread throughout the Americas with devastating consequences. Recent limited evidence suggests the potential for neurological effects associated with postnatally acquired ZIKV infection in humans; however, the impact on children is unknown. The researchers will conduct a longitudinal study of approximately 450 Nicaraguan children who were ages 2-12 in 2016 to evaluate the presence and persistence of neurological symptoms associated with ZIKV infection and to test whether ZIKV-infected children are at greater risk for developing neurological outcomes compared to uninfected children.
This clinical study will evaluate the safety, tolerability and reactogenicity of mRNA-1893 Zika vaccines in flavivirus seronegative and flavivirus seropositive participants
The purpose of this study is to evaluate the safety, reactogenicity, and immunogenicity of a single dose of the live attenuated Zika vaccine rZIKV/D4Δ30-713 in adults with no history of previous flavivirus infection.
In this Phase 1 study, two target dose levels of VLA1601, a purified, inactivated, whole Zika virus (ZIKV) vaccine candidate adsorbed on aluminum hydroxide (alum) will be evaluated: 6 antigen units (AU) and 3 AU of inactivated ZIKV vaccine. Each dose will be administered intramuscularly (i.m.) in the deltoid muscle on Days 0 and 28. In addition, an accelerated 2-dose vaccination schedule on Days 0 and 7 will be assessed for both doses.
The aim of this proposal is to evaluate the causal relationship between Zika virus (ZIKV) infections in pregnancy and congenital malformations. The study will estimate the absolute and relative risks of congenital malformations and other adverse outcomes of pregnancy among women who become infected with ZIKV during pregnancy compared to uninfected pregnant women, also leading to further validation of the Congenital Zika Syndrome.
The purpose of this study is to compare the incidence of Zika virus (ZIKV) infection among pregnant women with and without Human Immunodeficiency Virus (HIV) infection and to determine the risk of adverse maternal and child outcomes associated with ZIKV/HIV co-infection across clinical sites in the continental United States (U.S.), Puerto Rico (P.R.) and Brazil.
Congenital Zika virus syndrome (SCZv) has been gaining attention in studies due to changes in the central nervous system and in the motor development of children. These changes resulted in an unexpected picture and without future predictability, with the appearance of several functional impairments and also on orthostatic posture. In this context, the protocol of orthostatism proposed here is a 10-week program of the use of a postural adjuster, the standing frame, made of its own with alternative material to the commercial models (cardboard). The use of low cost materials allows these devices to be made in the desired size without cost high, individually adapted, easy to be transported as it is light and can still be colored. It is an equipment that offers the opportunity to experience the orthostatic posture and mainly benefits children with little economic resources that enable the acquisition of traditional devices made of iron or wood and even imported equipment. The postural adjuster allows physical and sensorial opportunity, being an auxiliary resource in standing positioning, feasible for home use, besides being useful for performing functional activities. Thus, the objective will be to analyze the repercussions of the use of the standing frame on body alignment, muscle tone, gross motor function and gastrointestinal functions of children with SCZv. An uncontrolled intervention study will be conducted with children between 12 and 24 months of age, who will undergo an evaluation before use and after the use of the adjunct along with the proposed orthostatism protocol. The postural alignment will be evaluated through photogrammetry and the evaluation of muscle tone will be performed through the modified Tardieu scale. The Gross Motor Function Measure (GMFM) scale will be used to assess the gross motor function of the children involved in the study. Questionnaires will be applied for the collection of maternal socio-demographic data, the child's data, the type and time of therapy that the child already participates, and the gastrointestinal functions. Evaluations will occur in four moments: initial / before use, on the first day of placement in the adjuster, after the first month after use and after the second month of use. For statistical analysis, the Shapiro Wilk Test will be applied to evaluate the normality of the data, and the Friedman or ANOVA tests for repeated samples, to analyze intra-group time factor for the dependent variables of each individual.