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A Survey of Acceptance and Factors Associated With Hesitancy Vaccination in Northeast Brazil

A Survey of Acceptance and Factors Associated With Hesitancy Vaccination in a Socioeconomically Disadvantaged Population and Professionals Working in a City Located in Northeast Brazil

Status
Not yet recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06675721
Enrollment
2500
Registered
2024-11-05
Start date
2024-12-31
Completion date
2025-12-31
Last updated
2024-11-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vaccine Hesitancy, Vaccine Refusal

Brief summary

The objective of this study is to investigate vaccination acceptance and identify the reasons why people are not vaccinated. People over 18 years of age who live in neighborhoods with socioeconomic vulnerability and with many cases of infectious diseases, as well as health professionals, will respond to a research questionnaire.

Interventions

A survey questionnaire to assess factors related to vaccination adherence, including factors such as vaccine novelty, cost, and prior knowledge among vulnerable populations.

Sponsors

MSD Pharmaceuticals LLC
CollaboratorINDUSTRY
Centro De Estudos E Pesquisas Em Molestias Infecciosas
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Individuals who are over 18 years old and are residents of the PAJUÇARA, FELIPE CAMARÃO, LAGOA AZUL, or PLANALTO neighborhoods, willing to answer the study questionnaire. * Healthcare professionals who work in Natal, willing to answer the study questionnaire.

Design outcomes

Primary

MeasureTime frameDescription
Resistance to adherence to vaccinationBaselineResistance to adherence to vaccination will be measured using a questionnaire developed for this survey. The questionnaire will be described by mean and standard deviation, and the distribution frequency of each item will be presented, comparing cohorts of health professionals and populations in socioeconomic vulnerability.

Contacts

Primary ContactKleber G Luz, PhD
klebergluz@gmail.com+55 84 999824374
Backup ContactEveline P Milan, PhD
evepipolo@gmail.com+55 84 994027404

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026