Water quality for the Olympic Games in Rio De Janeiro, 2016

WHO provides technical advice to national authorities in Brazil on matters of public health, and to the International Olympic Committee (IOC) and local organizing committee (LOC) on health issues associated with visitors and athletes attending the Olympic Games.

Influenza pandemics can have a major impact on the world's population, and experts say the threat of a future pandemic looms large

Several influenza pandemics affected the world population over the course of the 20th and early 21st centuries and the threat of the next pandemic looms large. This film explains a number of key aspects of the constant evolutions of influenza viruses and associated impact on public health. Because of the nature of the virus and its threat, the World Health Organization carries out global surveillance of this disease throughout the year, calling on thousands of scientists worldwide.

OPS/OMS, Argentina. El día 15 de setiembre pasado se inauguró el Centro Colaborador de OMS en Atención Médica y Clínica de la Enfermedad de Chagas, en el Centro de Chagas y Patología Regional del Ministerio de Salud de Santiago del Estero, Argentina. 

WHO verifies Mexico free of onchocerciasis14 October 2015 | Geneva -- Mexico has become the third country in the world to be declared free of onchocerciasis, a parasitic disease that mainly affects poor people in rural areas. The announcement came days before the 2015 Nobel Prize for Physiology or Medicine was awarded to two researchers for theirdiscovery of ivermectin, the mainstay of treatment for onchocerciasis (also known as river blindness).

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30 SEPTEMBER 2015 ¦ GENEVA - Anyone infected with HIV should begin antiretroviral treatment as soon after diagnosis as possible, WHO announced Wednesday. With its "treat-all" recommendation, WHO removes all limitations on eligibility for antiretroviral therapy (ART) among people living with HIV; all populations and age groups are now eligible for treatment.


Health leaders attending the 54th Directing Council of the Pan American Health Organization (PAHO) today adopted plans and strategies to boost immunization rates, reduce deaths and illness from hepatitis, accelerate the fight against tuberculosis and reform public health laws in the Americas.

Saying the time is now to capitalize on a decade of advances against tuberculosis in the Americas, health officials from across the region today pledged to accelerate still further their efforts against the disease.

Child with mother

Ministers of health from throughout the Americas agreed today on a series of actions to prevent and control viral hepatitis infection, with emphasis on hepatitis B and C, which affect an estimated 20 million people in the region.

Panaftosa, 10 de septiembre de 2015 - El primer informe epidemiológico de la situación de la Equinococosis Quistica fue producido por los representantes de la "Iniciativa para el control de la Equinococosis quística: Argentina, Brasil, Chile, Perú y Uruguay".

Latin American and Caribbean countries have called for sharply reducing the number of new HIV infections and HIV related discrimination in the region and have set new prevention targets to be met by 2020.

Communicable Diseases and Environmental Determinants of Health