Usefulness of High-Resolution Computed Tomography in Early Diagnosis of Patients with Suspected COVID-19.

Background: Diagnosis of coronavirus disease 2019 (COVID-19) is mainly based on molecular testing. General population studies have shown that chest Computed Tomography (CT) can also be useful.

Objective: The study aims to examine the usefulness of high-resolution chest CT for early diagnosis of patients with suspected COVID-19.

25-Hydroxyvitamin D level is associated with mortality in patients with critical COVID-19: a prospective observational study in Mexico City.

Background/objectives: Considering the high number of deaths from coronavirus disease 2019 (COVID-19) in Latin American countries, together with multiple factors that increase the prevalence of vitamin D deficiency, we aimed to determine 25-hydroxyvitamin D (25[OH]D) levels and its association with mortality in patients with critical COVID-19.

Subjects/methods: This was a prospective observational study including adult patients with critical COVID-19. Data, including clinical characteristics and 25(OH)D levels measured at the time of intensive care unit admission, were collected.

Abo Blood Group, Atherothrombotic Comorbidities, and COVID-19: A Case-Control Study of their Association in the Mexican Population.

Background: COVID-19 has been associated with negative results in patients with A blood group and with a better evolution in O blood group individuals.

Aim: Because the evidence regarding ABO blood groups and COVID was empirically not that clear in our country, we tested the association regarding COVID-19 and blood groups.

Material And Methods: Adult patients were enrolled in this prospective, case-control, observational multicenter study.