Los datos preliminares de eficacia se infirieron mediante un enfoque de “inmunogenicidad puente”, en el que los títulos neutralizantes obtenidos después de la vacuna en niños y niñas de 5 a 11 años se compararon con los títulos obtenidos en adolescentes de 16 a 25 años (en quienes se hab...a evaluado la eficacia).Entre los participantes sin evidencia de infección previa por SARS-CoV-2, hubo 3 casos de COVID-19 entre los 1.305 receptores de vacuna a partir de los 7 días de la segunda dosis y 16 entre los 663 receptores de placebo.
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Guía de medicamentos esenciales para primer nivel de atención – Edición 2019
Small drinking-water supplies commonly experience operational, managerial, technical and resourcing challenges that impact their ability to deliver safe and reliable services. The needs and opportunities associated with these supplies therefore warrant explicit consideration in policies and regulati...ons.
These Guidelines, specifically tailored to small water supplies, build on over 60 years of guidance by the World Health Organization (WHO) on drinking-water quality and safety. They focus on establishing drinking-water quality regulations and standards that are health based and context appropriate; on proactively managing risks through water safety planning and sanitary inspections; and on carrying out independent surveillance. The guidance is intended primarily for decision-makers at national and subnational levels with responsibility for developing regulatory frameworks and support programmes related to these activities. Other stakeholders involved in water service provision will also benefit from the guidance in this document.
Designed to be practical and accessible, these Guidelines offer clear guidance that is rooted in the principle of progressive improvement. State-of-the-art recommendations and implementation guidance are provided, drawn from a comprehensive evidence review and established good practices. Additionally, case examples are provided from countries and areas around the world to demonstrate how the guidance in this publication has been implemented in practice in a wide variety of contexts.
Together with WHO’s 2024 Sanitary inspection packages – a supporting tool for the Guidelines for drinking-water quality: small water supplies, these Guidelines update and supersede WHO’s 1997 Guidelines for drinking-water quality. Volume 3: surveillance and control of community supplies. Key changes to this updated publication include a greater focus on preventive risk management and a broader range of small water supplies covered, including those managed by households, communities and professional entities.
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