Since the discovery in December 2019, of several cases of infection with the new coronavirus (SAR CoV2) in Wuhan, China, the WHO has issued a state of alert around the world given the rapid and severe spread of a pandemic called COVID-19. This virus, an enveloped single-stranded RNA virus, was rapidly responsible for a pandemic of COVID-19 disease. The first reported manifestations of the disease were mainly respiratory.Pediatric forms were described somewhat later and remained mostly familial. Children and adolescents under 18 years of age were found to be more rarely affected than adults....

Leishmaniasis affects the world's poorest populations and is associated with malnutrition, unsanitary housing, a weakened immune system and lack of financial resources. There are three main forms of leishmaniasis: visceral (the most severe, often called kala-azar), cutaneous (the most common) and mucocutaneous. Leishmaniasis is a disease caused by a protozoan of the genus Leishmania, transmitted by the bite of an infected sandfly. Infestation with Leishmania parasites progresses to the disease stage in only a small proportion of infected individuals. The reservoirs of the parasite are wild...