According to Brazil's colorful health calendar, the month of June is marked by the color red, as it has an extremely important date, World Blood Donor Day.

Known as Red June, the sixth month of the year is full of explanatory events and attracting donors to the country's main blood banks, whose stocks need constant renewal. The article published by BJHBS “Prevalence of sickle cell trait in blood donors: A systematic review” aims to systematize data related to the prevalence of sickle cell trait among blood donors, collaborating with this month's theme.
The article is available at https://bjhbs.hupe.uerj.br/bjhbs/article/view/117 Donate blood and save lives!