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Martín Romero Martínez1, Tonatiuh Barrientos-Gutiérrez2, Lucia Cuevas-Nasu3

  • 1Centro de Investigación en Evaluación y Encuestas, Instituto Nacional de Salud Pública. Cuernavaca, Morelos, México.. martin.romero@insp.mx.

Salud Publica De Mexico
|January 31, 2022
PubMed
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This summary is machine-generated.

The National Survey of Health and Nutrition 2021 (Ensanut 2021) is a national household survey designed to assess SARS-CoV-2 seropositivity. It aims to provide regional and state-level prevalence data.

Area of Science:

  • Public Health
  • Epidemiology
  • Survey Methodology

Background:

  • The National Survey of Health and Nutrition (Ensanut) is a continuous survey series.
  • The 2021 iteration (Ensanut 2021) is part of the 2020-2024 series, focusing on national health and nutrition data.
  • Assessing SARS-CoV-2 seropositivity is crucial for understanding population immunity.

Purpose of the Study:

  • To describe the design of the National Survey of Health and Nutrition 2021 (Ensanut 2021).
  • To detail the scope, sampling strategy, measurement techniques, and logistical organization of Ensanut 2021.
  • To outline the survey's capacity for estimating SARS-CoV-2 seropositivity at various geographical levels.

Main Methods:

  • Ensanut 2021 employed a probabilistic household survey design.

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  • The methodology included national-level sampling for household interviews and seropositivity testing.
  • Data collection focused on scope, sampling, measurement, and logistics.

    • Main Results:

    • The survey planned to collect at least 12,060 complete national household interviews.
    • Approximately 9,837 samples were targeted for national SARS-CoV-2 seropositivity determination.
    • The design facilitates robust national estimates for key health indicators.

    Conclusions:

    • Ensanut 2021 is designed to enable regional inferences on SARS-CoV-2 seropositivity prevalence.
    • The data collected will contribute to state-level inferences by 2024.
    • The survey's comprehensive design supports ongoing public health surveillance and research.