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Abstract Background: The Covid-19 pandemic caused a negative impact on other infectious diseases control, prevention, and treatment. Consequently, low and middle-income countries suffer from other endemic diseases, such as tuberculosis. This study was designed to compare Covid-19 manifestations and outcomes between patients with previously treated tuberculosis and controls without this condition. Methods: We performed a matched case-control study drawn from the Brazilian Covid-19 Registry data, including in-hospital patients aged 18 and over with laboratory-confirmed Covid-19 from March 1, 2020 to March 31, 2022. Cases were patients with a past history of tuberculosis. Controls were Covid-19 patients without tuberculosis history. Patients were matched by hospital, sex, presence of HIV and number of comorbidities, with a 1:4 ratio. Results: From 13,636 patients with laboratory-confirmed diagnosis of Covid-19 enrolled in this study, 80 had a history of tuberculosis. Statistical differences in history of chronic pulmonary obstructive disease (15% vs 3.2%), psychiatric disease (10% vs 3.5%,), chronic kidney disease (11.2% vs 2.8%) and solid-organ transplantation; (5% vs 0.9%, pConclusions: Patients with a history of tuberculosis infection presented a higher frequency of use of illicit drugs, chronic pulmonary obstructive disease, psychiatric disease, chronic kidney disease, solid-organ transplantation, prior use of inhalatory medications, oral corticoids, and immunosuppressants. The outcomes were similar between cases and controls.
Carvalho et al. (Mon,) studied this question.