• Claudio Olmos and Valeria Stuardo.
• Departamentos de Pediatría, Universidad Autónoma de Barcelona, Barcelona, España.
• Rev Med Chil. 2020 Jul 1; 148 (7): 963-969.

BackgroundPoor living conditions promote the spread of communicable diseases. It happened with Tuberculosis (TB) and is happening with COVID-19. Due to its dynamic nature, this group of diseases must be studied in the context of the social determinants of health.AimTo describe the epidemiological behavior of COVID-19 in response to the control strategies implemented by the Chilean Ministry of Health and its similarities with the socio-economic distribution of TB in the Metropolitan Region (MR) of Chile.Material And MethodsThe 2018 Tuberculosis rates and average income of districts belonging to the MR were described, as well as the incidence rates of COVID-19. A Pearson correlation analysis was applied between the rates of both diseases, to assess similarities in the epidemiological distribution patterns.ResultsThe RM accounts for over 50% of the total national cases of COVID-19. After the implementation of selective quarantines, only four districts in the RM managed to control the outbreak (those with the highest incomes). In the rest, a clear increase in cases was observed. The districts with the highest increase in cases were the most disadvantaged, and those with the highest TB rates during 2018, with a correlation coefficient of 0.6.ConclusionsControl policies cannot deepen health inequalities. If vulnerable groups, as well as the factors that determine their health, are not properly identified, the consequences of the current pandemic could be even more devastating.

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