Diphtheria in the Americas: strengthening routine immunization, surveillance, and outbreak readiness

13 JULY 2026, WASHINGTON, D.C.— Diphtheria is increasing in the Region of the Americas. Between epidemiological week (EW) 1 and EW 21 of 2026, 163 confirmed cases, including five deaths, were reported across three countries: Brazil (n = 2 cases), Haiti (n = 159 cases, including five deaths), and Peru (n = 2 cases). The concentration of cases in Haiti, together with new cases in other countries of the Region, has resulted in a total that already exceeds the annual average of 61 confirmed cases reported across the Americas during 2020–2024.

El Niño in the Americas, 2026–2027: public health risks and preparedness priorities

8 JULY 2026, WASHINGTON, D.C.— El Niño conditions forecast for 2026–2027 signal overlapping public health and humanitarian risks across the Americas. Exceptionally warm global ocean and atmospheric temperatures may amplify or modify expected climatic anomalies, including droughts and floods, and their associated public health impacts.

Reinforcing measles control in the Americas amid mass gatherings: detection, response, and traveler health implications

17 JUNE 2026, WASHINGTON, D.C. — More than 184 000 suspected measles/rubella cases have been reported worldwide in 2026, reflecting widespread transmission across all WHO regions. In the Americas Region, confirmed cases have reached 20 521 by EW 20 -- with 25 deaths -- representing a four-fold increase from the number reported in the same period in 2025. Against this backdrop, mass gatherings and cross-border travel act as amplifiers of transmission, particularly in populations with suboptimal vaccination coverage.

Alimentos complementarios comerciales en Argentina y México: análisis de su composición nutricional, etiquetado y promoción

Objetivo. Caracterizar los alimentos complementarios comerciales (ACC) disponibles en Argentina y México y analizar su alineación con un modelo de perfil de nutrientes y promoción de ACC diseñado y adaptado para América Latina y el Caribe. 

Panorama de la atención domiciliaria para pacientes con enfermedades crónicas en América Latina: una revisión de alcance

Objetivo. Mapear la evidencia disponible sobre los servicios de atención domiciliaria para personas adultas mayores con enfermedades crónicas en América Latina y describir las características de los modelos de atención y los resultados comunicados. 

Gobernanza, organización y distribución de tareas en la planificación familiar en América Latina y el Caribe

Objetivo. Describir comparativamente la gobernanza y la organización de los servicios, así como la distribución de tareas en la planificación familiar en países de América Latina y el Caribe (ALC), según el nivel de atención y la subregión. Métodos. Estudio observacional, transversal-comparativo, realizado en 2025 a través de una encuesta remitida a ministerios de salud de países de ALC con oficinas de la Organización Panamericana de la Salud. Se analizó (1) la gobernanza y organización de los servicios de planificación familiar y (2) la distribución de tareas.

Co-developing a community health worker-led hypertension control intervention in Peru through a human-centered design approach

Objective. To define the essential content and design elements for hypertension support delivered by community health workers (CHWs) in Puno, Peru, aligned with the HEARTS Initiative. 

Methods. We applied a human-centered design approach to co-create strategies for a CHW-led hypertension intervention through five interactive workshops with 24 CHWs, 32 healthcare workers (doctors, nurses, and administrators), and 18 community members with hypertension. 

Current Yellow fever situation in the Americas: call for strengthened surveillance and vaccination efforts in enzootic and newly affected areas

Yellow fever activity in the Americas Region has intensified over the past two years, with 2025 recording the highest annual number of confirmed cases since 2020 (Figure 1). This resurgence follows major outbreaks reported in 2017 and 2018 and is notable for cases in areas without a historical record of transmission, including outside of the Amazon Region. Preventing further spread of the virus requires maintaining strong surveillance systems, sustaining high vaccination coverage in populations living in high-risk areas, and ensuring a timely detection and coordinated response. 

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