An observational study in Dengue and Flavivirus Infections, sponsored by Fundacion GESICA. Recruiting at 1 site in Argentina. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-09-13.
Sponsored by Fundacion GESICA · Observational
The objective of this observational study of dengue seroprevalence in the metropolitan area of Buenos Aires is to know what percentage of the population has antibodies against dengue in persons 18 years of age or older who are residents of the city of Buenos Aires or its metropolitan area. The main questions to be answered are:
A two-stage stratified design will be used. The primary sampling units will be mostly defined as the census sections of the 2010 National Census of Population, Households and Dwellings. It has 5 strata, constructed through a functional relationship between the income quintiles obtained in the Annual Household Survey (AHS) and the variables that were surveyed in the census. Stratum 1 corresponds to the lowest income population, while stratum 5 corresponds to the highest. The first stage of sampling in this framework will consist of about 100 to 300 primary sampling units, called primary units areas, selected with a probability proportional to size, the measure of size being the total number of dwellings.
A sample of 1,487 dwellings is proposed. In each primary unit area, a number of dwellings will be selected to be visited by enumerators, who will make a list of all members residing in the dwelling (regardless of whether they are from the same household) and select a member aged ≥18 years to proceed with the survey. This last selection is a 3rd and final sampling stage that will define the sample of 1487 participants to be tested. The sample size was calculated based on the estimated probability of pre-infection for each of the municipalities and localities participating in the survey.
283 studies on the registry are indexed under Dengue; 44 are open to participants now.
This study's planned enrollment of 1,487 is above the median of 595 across 80 observational studies indexed under Dengue.
Browse Dengue studies →Fundacion GESICA is the lead sponsor of 5 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
A two-stage stratified design will be used. The primary sampling units will be mostly defined as the census tracts of the 2010 national population, household and housing census. It has 5 strata, constructed through a functional relationship between the income quintiles obtained in the Annual Household Survey (HHS) and variables that were surveyed in the census. Stratum 1 is the lowest income population, while stratum 5 corresponds to the highest. The first stage of sampling in this framework will be made up of nearly 100 to 300 primary sampling units, called UP areas, selected with probability proportional to size, the measure of size being the total number of dwellings. A sample size of 1487 dwellings is proposed.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
All participants who agree to participate by signing an informed consent form will undergo a finger prick for the determination of Immunoglobulin G antibodies measured by ELISA. In a subgroup of persons who test positive, they will be invited to have blood drawn for neutralization determination in order to study serotypes and the presence of other flaviviruses.
Seroprevalence
Percentage of the population with Immunoglobulin G antibodies against dengue fever
Time frame: Through study completion, an average of 1 year
Other flavivirus prevalence
Percentage of population with Immunoglobulin G antibodies to dengue, but found to be cross-reactive to other flaviviruses on plaque neutralization.
Time frame: Through study completion, an average of 1 year
Specific dengue serotype
Dengue-specific serotype among the Immunoglobulin G-positive population.
Time frame: Through study completion, an average of 1 year
Plan to share: No
No publications or documents are linked to this record.
Started Sep 2023 (actual). Primary completion is estimated for Dec 2023, 3 months after the start.
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