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Introduction: COVID-19, caused by the betacoronavirus SARS-CoV-2, has overwhelmed the world's health systems., Objective: To describe the epidemiological characteristics of patients treated in a tertiary care hospital., Methods: A retrospective cohort study of patients diagnosed with or suspected of having COVID-19 from March 23 to July 31, 2020 was conducted., Results: 4,401 patients were hospitalized at Central Military Hospital, out of which 35 % were beneficiaries, 26 % civilians, 28 % active military personnel, and only 11 %, retired military personnel. Male gender predominated, both in hospitalized patients and in those who died, as well as the O+ group and absence of comorbidities; among the observed comorbidities, the main ones were overweight and diabetes. Hospitalized patients' median age was 49 years, while median age of those who died was 62 years; women older than 51 years had a higher risk of dying. Adjusted case fatality rate was 18.5 %; 50 % died within the first six days., Conclusions: In this study, the epidemiological characteristics and main comorbidities in Mexican patients with SARS-CoV-2 infection were identified., (Copyright: © 2021 Permanyer.)

Background: Shotgun injuries (SGI) are infrequent, but due its special ballistics, are related to adverse outcomes., Objective: To analyze operative and administrative variables, critical for the institution., Method: Demographics and health-care related variables from SGI patients admitted to Military Central Hospital (Mexico City) between July 2006 and August 2019, were retrospectively studied. Statistics methods used were dispersion measures and relative occurrence frequency., Results: Over a 15 months-span, 21 SGI patients were admitted. Mean age was 36.9 ± 13.6 years (range: 14-61) and male gender was dominant (n = 20; 95%). Type II SGI were the most common injuries (62%; 13/21). Mean hospital length of stay was 37.1 ± 28.7 days (range: 3-109) while stay at ICU was 20.3 ± 22.5 days (range: 3-99). Global rate of morbidity was 82% (17/21) and most frequent complications were infective. Global mortality rate was 24% (5/21)., Conclusions: Once SGI cause prolonged length of stay, high rate of morbidity and of enormous consuming of material and human resources, primary prevention strategies are convenient for health-care systems compromised to the care of these cases., (Copyright: © 2020 Permanyer.)