Allergic Rhinitis in Preschoolers: A Systematic Review of Diagnostics.

Background: Most studies that seek to analyze the prevalence of allergic rhinitis do not include preschool children and the diagnosis in this age group is difficult.

Objective: Identify complementary tests to the diagnosis of allergic rhinitis in preschool children and verify if there is scientific robustness to propose a diagnostic algorithm for this condition in this age group.

Methods: Systematic review of the literature in four databases: SCIELO, PubMed/MEDLINE, LILACS and SCOPUS.

SARS-COV-2 Vaccines: What Indicators are Associated with the Worldwide Distribution of the First Doses.

The present study aimed to identify the factors associated with the distribution of the first doses of the COVID-19 vaccine. In this study, we used 9 variables: human development index (HDI), gross domestic product (GDP per capita), Gini index, population density, extreme poverty, life expectancy, COVID cases, COVID deaths, and reproduction rate. The time period was until February 1, 2021.

Rare association of consumptive coagulopathy in visceral leishmaniasis: A case report.

Visceral leishmaniasis is a tropical parasitic disease caused by the species of the genus The clinical picture includes fever, splenomegaly, leucopenia, anaemia and hypergammaglobulinaemia. There may also be a drop in plasma fibrinogen levels or an increase in plasma fibrinolytic activity. Furthermore, visceral leishmaniasis may be the trigger for secondary haemophagocytic lymphohistiocytosis.