Vol. 1, Num. 1, 2025
John Snow, London 1853






ERSJ Epidemiological Research and Surveillance Journal", Year 1, No. 1. Periodicity: Quarterly, August - October 2025. Publication edited by Porfirio Felipe Hernández Bautista. Address: Insurgentes Sur #730, Floor 2, Interior A, Colonia Del Valle, C.P. 03100, Mexico City, CDMX Telephone: (644) 133-0383. Email: editor@ersj.org. Website: https://ersj.org/. Certificate of Reservation of Rights to the Exclusive Use of Title No. ISSN: In process



Copyright: © 2026 by the authors. Licensee ERJS, Mexico City, Mexico. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/)


EPIDEMIOLOGICAL RESEARCH AND SURVEILLANCE JOURNAL


Table of Contents


Perspective


The legacy of John Snow.
Porfirio Felipe Hernández Bautista

Epidemiological Research


Postpartum depression is associated with the route of obtaining the newborn.
Briana Bray-Contreras and Eduardo Arturo Serrano-García

Prenatal treatment in newborns with congenital syphilis.
Mariana Sánchez-García and Carmen Alicia Ruiz-Valdez

Antiretroviral therapy adherence in patients with HIV/AIDS and family functionality.
Leonardo Fabián Yáñez-Gutiérrez and Miguel Ángel Aguilera-Arias


Epidemiological surveillance


What we need in Mexico to eliminate vertical transmission of HIV and syphilis, epidemiological analysis.
Monica Grisel Rivera-Mahey

Epidemiological surveillance of cholera in the 21st century.
Oscar Cruz-Orozco