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NCT07112846
Exanthematous fevers are a global public health problem. The spread of arboviruses due to various factors, including climate change, has resulted in major epidemics such as the one that occurred in Brazil in 2024, representing an extremely concerning scenario from both epidemiological and healthcare perspectives. In addition to this, the reemergence of childhood exanthematous diseases in several countries, including Brazil, is alarming and occurs due to declining vaccination coverage and increased migratory movements. These diseases present overlapping clinical symptoms, and their differential diagnosis is often challenging, which, in a context of dengue and Chikungunya epidemics like the current one, may lead to underreporting of diseases such as measles and rubella. This project aims to build a prospective registry of the occurrence of dengue, Chikungunya, measles, and rubella in various healthcare centers in Brazil, in order to better understand the epidemiological scenario, identify clinical variables associated with different diagnoses, and describe healthcare bottlenecks that may hinder proper reporting and identification of these diseases.
NCT03460002
The world is set on eradicating measles and polio infections in the coming decade. Once both infections are under control, campaigns with measles and oral polio vaccines will be phased out. This might do more harm than good for child survival in low-income countries. Studies from the Bandim Health Project in Guinea-Bissau, and elsewhere, have revealed, that the live measles and oral polio vaccines have beneficial non-specific effects, i.e. effects on child morbidity and mortality unrelated to prevention of the targeted diseases. The campaigns are presumed to be most beneficial for children not reached by routine vaccination programs, as they are not already protected. However, studies show that prior routine or campaign vaccination may boost resistance against unrelated infections. If we phase out measles and oral polio campaigns after eradicating their target infections without considering the impact on child survival, the drastic decline in child mortality since 1990 could change direction. We will conduct the first cluster randomized controlled trial to evaluate the effect of measles and oral polio campaigns on general child morbidity and mortality via the Bandim Health Project. Bandim Health Project runs a Health and Demographic Surveillance System in Guinea-Bissau since 1978 and assesses child health interventions' real-life effects, via continuous registration of all interventions given to all children, and follow-up of individuals. We will conduct the trials in rural Guinea-Bissau monitoring all nine health regions. The hypotheses are: RECAMP-MV: Measles vaccination campaign in Guinea-Bissau reduce morbidity and mortality among children between 9 and 59 months of age by 80% during the subsequent 18 months in a context of limited measles infection. RECAMP-OPV: Oral polio vaccination campaigns in Guinea-Bissau reduce morbidity and mortality among children between 0 and 8 months of age by 25% during the subsequent 12 months in a context with no polio infection. Originally, the trials were meant to be implemented in 182 clusters, enrolling 21000 children. Following revised sample size calculations and discussions with the Data Safety and Monitoring Board, the number of clusters were increased to 222 and the planned number of enrolments increased from 21,000 to 28,000 (RECAMP-MV: 18000, RECAMP-OPV: 10000). To explore the hypothesis that at least part of the beneficial non-specific effects of OPV is driven by changes in the gut and/or respiratory microbiome, we will collect microbiome samples in a sub-group: A nasal swab and a rectal swab will be collected from 50 infants allocated to the intervention group, and 50 infants allocated to the control group. Two sample will be collected for each infant one when recruited for RECAMP-OPV and a second two months later.
NCT05771779
An open-label, randomized controlled, non-inferiority study of co-administration of OCV, TCV and MR vaccines among children 12 to 59 months of age in Dhaka, Bangladesh will be conducted. Children who did not receive any of the aforementioned vaccines will be included in the study. This study will be conducted among 2117 children of 12-59 months of age residing in Mirpur area (wards 4, and 6-16) of Dhaka north and Kamrangirchar, Hazaribag and Rayerbazar areas (wards 14, 22, 56, 57, and 58) of Dhaka south to enroll the required number of participants. Only children who have not previously received the vaccines will be enrolled. The findings of this study are likely to have a significant impact on vaccine co-administration strategies for campaign and routine immunization programs. The participants will be randomly assigned to one of the six arms. The numbers are defined for each arm based on the sample size calculation. A list of children who did not receive MR, OCV and TCV will be prepared before enrollment by trained study staff (TSS). The TSSs will visit households in the defined study area and ask if the parents/guardians of children aged 12-59 months are willing to participate in the study. If they show willingness to participate, the TSSs will check their vaccination cards (if available) and prepare the list of potentially eligible children who have not received OCV, TCV and MR based on their vaccination card status and verbal statement (if vaccination card is not available). The investigators will enroll the participants after obtaining informed written consent and collect around 2-3 ml blood from each participant at different time points.
NCT05803538
Introduction Participant centered active adverse event following immunization (AEFI) surveillance can offer real time vaccine safety data and help in signal detection. Evidence showed that it is still difficult to get AEFI from passive reporting in Ethiopia. Vast novel method of enhanced AEFI surveillance has been practiced globally. However, those methods had serious limitations including the requirement of high resource and expertise. Hence, there is a need to find the most flexible low cost and integrated AEFI surveillance system. To the best of our knowledge, there has no published research in Ethiopia which compare Participant diary, SMS, and telephone interview for the purpose of active AEFI surveillance. Objective: To assess participant centered active adverse event surveillance following measles immunization at Gedeo Zone health facilities, Ethiopia. Method: An open randomized trial will be employed from October 1, 2022- December 1, 2023, at Gedio Zone health facilities. All parents, care givers/guardians whose child receive vaccine during the study period in the study site will be included in the study. A total of 391participants will be randomized to SMS, telephone interview or diary card group using random number generator on Excel. Every participant will be contacted on day seven to request them whether they experience any AEFI. Differences in proportions will compared using chi-square tests. A 0.05 level of significance will be used for all analyses. Independent sample t-tests will be used to compare the mean time (in days) required to collect complete AEFI data by SMS, telephone interview and diary card. Multinominal logistic regression analyses will be used assess the factors associated with effective use of tailored SMS, telephone interview and diary card for the AEFI active surveillance. To further investigate the association between the vaccine and the adverse events and factors associated with vaccine binary and multi variable logistic regression will be used.
NCT00962819
This study will lay the foundation for determining the underlying reasons for lack of immunity to mumps that led to the 2006 mumps outbreak on college campuses in the Mid West, and it will assess the potential for similar outbreaks of measles and rubella. A total of 70 to 80 college students (age 18 to 22) on the Emory campus (or nearby college campuses or the community) will be assessed for antibodies to measles, mumps or rubella by drawing a one-time blood sample. Their medical records will be verified for documentation of immunization with MMR vaccine prior to enrollment in the study. If a study volunteer is found to not have MMR immunity, they will be offered an MMR-II vaccine. For this group, additional blood specimens will be obtained.
NCT02880865
This study aims to provide evidence that co-administration of measles-mumps-rubella vaccine (MMR) and live attenuated SA 14-14-2 Japanese encephalitis vaccine (CD-JEV) does not adversely affect immunogenicity or safety.
NCT04468802
Mortality rates caused by SARS CoV-2 differ between countries and this difference might be explained by several reasons. Childhood vaccination rate is thought to be one of them. Therefore present study aimed to examine the possible relationship between DTaP (diphtheria, tetanus, pertussis) and measles vaccination rates of Organization for Economic Co-operation and Development (OECD) countries and case fatality rate (CFR) caused by SARS CoV-2.
NCT03330171
This trial will evaluate the safety and immunogenicity of: i) measles vaccine (CAM-70) after primary dose at 6 months (MV1) and booster vaccination at 12 months (MV2); ii) a single dose of varicella vaccination at 18 months; and iii) a single dose of hepatitis-A vaccination at 18 months in HIV-exposed and HIV-unexposed South African children.
NCT04177485
Faced with high rates of immunization drop-out, Uganda's immunization program requires innovative approaches to address this weakness. Building upon Uganda's growing mHealth infrastructure to pilot a scalable short message service (SMS) system to remind caregivers of their children's upcoming vaccination visits, it was hypothesized that the SMS intervention will increase immunization coverage in a cost-effective and affordable manner that would make it scalable. The study design was an investigator-blinded, multi-center, parallel groups randomized controlled trial with randomization occurring at the caregiver level in select health facilities of Arua District in Uganda. Enrollment took place at the time of Pentavalent 1 vaccination, and both arms included standard of care provided by the health worker. However, in the intervention arm, caregivers also received SMS text messages reminding them to return for their children's second and third doses of Pentavalent vaccine (four and eight weeks after the first dose of Pentavalent vaccine) and measles-containing vaccine (9 months of age). The primary outcome of interest is vaccination coverage at 12 months of age among children enrolled in the study and will be measured by comparing Penta3 and MCV coverage between arms. The study will also examine the SMS impact on timeliness of vaccine receipt, as it is hypothesized that those children receiving the SMS intervention will be more likely to have timely vaccination than those in the control group. The study will also assess caregiver acceptability and cost-effectiveness of the SMS intervention. In addition to assessing its impact on strengthening the immunization program, this intervention has implications for strengthening other programs of the health system through similar health messaging directed toward caregivers.
NCT01621802
The purpose of this study is to support licensure of GSK Biologicals' MMR vaccine (Priorix®) in the US by generating immunogenicity and safety data in contrast to the US standard of care, Merck's MMR vaccine (M-M-R®II), when given as a second dose to children four to six years of age.
NCT00892775
This study is undertaken to generate clinical data on GSK Biologicals' combined measles-mumps-rubella-varicella vaccine manufactured with measles and rubella obtained from newly established working seed viruses which are one passage further than the current working seed viruses. The measles-mumps-rubella-varicella vaccine manufactured with the current working seed viruses will serve as comparator. A seed lot system is a system according to which successive batches of a vaccine are derived from the same master seed virus. For routine production, a working seed lot is prepared from the master seed virus.
NCT01536405
This study will compare the safety, tolerability, and immunogenicity of measles, mumps, rubella, and varicella (MMRV) vaccine made with an alternative manufacturing process with those of the 2006 process
NCT02058563
The purpose of this study is to evaluate the immunogenicity and safety of GSK's trivalent MMR (Priorix®), comparing it to Merck"s MMR vaccine (M-M-R®II), which is approved for use in the US.
NCT01557699
This is a phase I, open-label, randomized study in healthy adults. Eligible subjects will be given single dose of either Dry Powdered Measles Vaccine (PMV) by Puffhaler® device, Dry PMV by SoloventTM device or licensed measles vaccine by subcutaneous route (SMV). Subjects will be followed for 180 days for safety.
NCT00839917
This study will compare ProQuad™ and concomitant administration of M-M-R™ II and Varivax™ with respect to immunogenicity, safety and tolerability. The primary hypothesis to be tested is that the antibody response rates to measles, mumps, rubella, and varicella 6 weeks after vaccination with ProQuad™ will be non-inferior to the antibody response rates after vaccination with concomitant M-M-R™ II and Varivax™.
NCT00126997
This is a study to assess the immunogenicity and safety of GlaxoSmithKline (GSK) Biologicals live attenuated measles-mumps-rubella-varicella vaccine given to healthy children in their second year of life.
NCT00388440
To evaluate the safety and immunogenicity of GSK Biologicals' live attenuated MMR vaccine (Priorix) in a local population in Singapore. The vaccine was administered as a single dose to healthy children (12-18 months of age) and blood samples were collected at two time points (before vaccination and after vaccination).
NCT00406211
Follow-up to evaluate the immunogenicity and safety of three production lots of GSK Biologicals' MMRV vaccine given as a two-dose schedule to healthy children in their second year of life, as compared to separate administration of GSK Biologicals' measles-mumps-rubella (MMR) vaccine (Priorix®) and varicella vaccine (Varilrix®) in Germany \& Austria. Blood samples were collected at three time points during the follow-up period (Year 1, 2 \& 3). No new subjects will be enrolled in these follow-up phases of the study.
NCT01991899
It is a clinicaltrial Phase III , randomized, double -blind , 4-arm (390 each one): This study will include 1560 children and will use 3 batches of vaccine produced by Bio - Manguinhos with viral bulk of GSK combined measles , mumps and rubella applied in healthy children 12-15 months of age, and 01 batch of MMR to reference( GSK ), applied in healthy children aged 12-15 months old . The vaccine is administered as MMR 1st dose. Two hypotheses are tested : 1. Consistency of production ( equivalence between batches )of 3 batches of vacines(TV1, TV2 , TV3 Bio- Manguinhos). Noninferiority vaccine Bio TV (Fiocruz, Rio de Janeiro), ie, the measles, mumps and rubella in Brazil is as immunogenic and safe as the measles, mumps and rubella reference, already used in routine NIP (production Bio-Manguinhos/FIOCRUZ with viral concentrate, bulk, GSK). The MMR vaccine (Bio-TV) will have the same composition (vaccine strains) and the same method of production of MMR (TV-GSK): Wistar RA27 / 3 rubella, Schwarz strain of measles vaccine, and strain RIT 4385 - derived from the Jeryl Lynn strain of mumps vaccine. As 2nd dose, children receive the vaccine tetraviral measles-mumps-rubella-varicella, aged 15-18 months, according to the guidance of the National Immunization Program. 2. Noninferiority vaccine Bio TV (Fiocruz, Rio de Janeiro):the measles, mumps and rubella vaccine in Brazil is as immunogenic and safe as the measles, mumps and rubella reference, already used in routine NIP (production Bio-Manguinhos/FIOCRUZ with viral concentrate, bulk, GSK). Returns for blood sampling will be scheduled for 51 days, ranging from 42 to 60 days after dose of MMR vaccine dose and after tetraviral. We will colect the firt blood sample before the first vaccination too. It will describe the major adverse events observed after vaccination , comparing their frequency in groups of MMR vaccine with the Brazilian reference vaccine .
NCT00985153
This study will compare three consistency lots of ProQuad to each other as well as to M-M-R II and Varivax, administered concomitantly at different injection sites, with respect to immunogenicity, safety, and tolerability.