Abstract Background and Objectives Blood transfusions are often needlessly aborted
following a non‐severe allergic reaction despite responding well to medication resulting into …

The emergence of a confound virus in China has caused a new pandemic spread
worldwide, and the disease was entitled “coronavirus disease-19 (COVID-19).” High …

At the end of 2020 and previous to the second wave of COVID-19 in Mexico, the
seroprevalence in unvaccinated people in the state of Campeche, Mexico was below 15 …

Background and objective Coronavirus disease 2019 (COVID-19) is an infectious disease
caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), leading to …

Objectives To determine SARS-CoV-2 seroprevalence over time and risk factors among
pregnant women at delivery in São Paulo, Brazil; and to evaluate the suitability of pregnant …

Introduction: The development of a potent immune response and antibodies against SARS-
CoV-2 is important for attaining herd immunity. This serological response could be due to …

Introdução: A covid-19 é uma doença infecciosa causada pelo novo coronavírus SARS-CoV-
2, responsável por causar a maior pandemia do século. A doença apresenta quadros …

Aim: The primary aim of this study was to determine the prevalence of COVID-19 in Jordan.
The secondary objective was to evaluate the risk factors associated with COVID-19 in the …

The new coronavirus disease 2019 (COVID-19) caused by the novel severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has a major impact in the whole …