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Objective. To present the design of the National Health and Nutrition Survey (Ensanut) 2022 and to quantify the progress of the Ensanut Continua 2020-2024. Materials and methods. Ensanut 2022 is the third survey in the series of surveys called Ensanut Continua 2020-2024. In this document, we describe the scope of Ensanut 2022 and its sampling, measurement and logistical organization procedures. In addition, the expected progress of the Ensanut Continua 2020-2024 at the conclusion of the Ensanut 2022 is presented. Results. Ensanut 2022 will obtain nationwide, at least 10 160 complete household interviews and 9 441 SARSCoV-2 seropositivity results. Conclusions. Ensanut 2022 will estimate the prevalence of SARS-CoV-2 seropositivity at the national and regional levels and will continue with the data gathering process, in order to achieve the objectives of the Ensanut Continua 2020-2024. [ABSTRACT FROM AUTHOR]

Objective. To describe the design of the Mexican 2021 National Health and Nutrition Survey (Ensanut 2021). Materials and methods. The Ensanut 2021 is a probabilistic household survey that is part of the continuous Ensanut 2020-2024; survey outreach, sampling, measurement and logistic organization are described. Results. It is planned to obtain at least 12 060 complete household interviews and 9 837 samples to determine SARS-CoV-2 seropositivity at the national level. Conclusions. Ensanut 2021 will allow to estimate the seroprevalence of SARS-CoV-2 antibodies at regional and national level; also, it will accumulate information to make state inferences for the year 2024. [ABSTRACT FROM AUTHOR]

Objective. To estimate the prevalence of Covid-19 sequelae and its association with sociodemographic and medical care characteristics. Materials and methods. Mexican adults that experienced Covid-19 symptoms and were seropositive to the N-protein of Sars-CoV-2 in the Ensanut 2020 responded to a question regarding sequelae. Associations were estimated using Poisson regression. Results. The prevalence of sequelae was 15.7%, being higher for people with higher education and who were hospitalized or treated at an emergency room during the acute Covid-19 phase. Conclusions. Self-reported sequelae associated to Covid-19 was frequent. Covid-19 sequelae could represent an important challenge for the health system and the Mexican society. [ABSTRACT FROM AUTHOR]