This document is part of the process for improving the quality of care in family planning. Medical eligibility criteria for contraceptive use (MEC), the first edition of which was published in 1996, prsents current World Health Organization (WHO) guidance on the safety of various contraceptive e- m...ethods for use in the context of specific health conditions and characteristics. This is the fifth edtion of the MEC –the latest in the series of periodic updates more

In the Region of the Americas, the leishmaniases are a group of diseases caused by various species of Leishmania, which cause a set of clinical syndromes in infected humans that can involve the skin, mucosa, and visceral organs. The spectrum of clinical disease is varied and depends on the interacti...on of several factors related to the parasite, the vector, and the host. Cutaneous leishmaniasis is the form most frequently reported in the Region and nearly 90% of cases present single or multiple localized lesions. Other cutaneous clinical forms, such as disseminated and diffuse cutaneous leishmaniasis, are more difficult to treat and relapses are common. The mucosal form is serious because it can cause disfigurement and severe disability if not diagnosed and treated early on. Visceral leishmaniasis is the most severe form, as it can cause death in up to 90% of untreated people. more

La miocarditis es una enfermedad inflamatoria con compromiso focal o difuso del miocardio, que se presenta de forma fulminante, pudiendo ser aguda, subaguda o crónica.Las que poseen un nivel de gravedad suficiente para reconocerlas clínicamente, son raras, pero la prevalencia de los casos leves y ...asintomáticos probablemente sea más elevada. more

Taenia saginata is a zoonotic tapeworm that is of economic importance in countries where cattle are kept. The parasite is transmitted from human tapeworm carriers (taeniosis) to bovines (cysticercosis) by excretion of eggs or proglottids containing eggs into the environment via the stool. Bovines ca...n then ingest the eggs through contaminated feed or water. After ingestion, the eggs hatch and release oncospheres in the small intestines, where the oncospheres penetrate the intestinal wall to reach the blood circulation. This distributes them throughout the body, but primarily to muscle tissue, where they develop into cysticerci. For humans to become infected with T. saginata, raw or undercooked bovine meat or offal containing infective cysts must be consumed. Bovine cysticercosis has been associated with various environmental factors related to water sources, such as animals having access to surface water, flooding of pastures and proximity to wastewater sources. more