Trachoma causes more vision loss and blindness than any other infection in the world. This disease is caused by Chlamydia trachomatis bacteria. Other variants or strains of these bacteria can cause a sexually transmitted infection (chlamydia) and disease in lymph nodes.
This is photomicrograph ...of a conjunctival smear that revealed the presence of what are known as, intracytoplasmic inclusions Trachoma is easily spread through direct personal contact such as from fingers, through shared towels and clothes, and through flies that have been in contact with the eyes or nose of an infected person. When left untreated, repeated Chlamydia trachomatis infections in the eye can cause severe scarring on the inside of the eyelid. This can cause the eyelashes to scratch the cornea (trichiasis). In addition to causing pain, trichiasis permanently damages the cornea and can lead to irreversible blindness.
Chlamydia trachomatis infections spread in areas that lack access to safely managed drinking water and sanitation systems. Trachoma affects the most resource-limited communities in the world. Globally, almost 1.9 million people have vision loss because of trachoma, and it causes 1.4% of all blindness worldwide.1 In 2021, 136 million people lived in trachoma-endemic areas and were at risk of trachoma blindness.
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Weekly epidemiological record WER9948-707-717
In English and French
This is the 42nd situation report for the multi-country outbreak of mpox, which provides an update on the epidemiological situation of mpox in Africa (including countries in the WHO African Region and some countries in the WHO Eastern Mediterranean Region), with data as of 3 November 2024.
At the time of writing, the novel coronavirus pandemic had reached every region of the world, with millions of infections globally and untold disruptions to nearly every aspect of daily life.
Primary care - Putting people first: This chapter describes how primary care brings promotion and prevention, cure and care together in a safe, effective and socially productive way at the interface between the population and the health system.
Natural disasters often increase morbidity and mortality rates. Taking appropriate measures to maintain environmental health helps to reduce or eliminate the risks of preventable disease and death. Such measures contribute not only to the health of individuals in and near disaster-stricken areas, bu...t they also contribute to decreasing the high costs of providing emergency health services in the aftermath of disaster.
This document is divided into several parts. The first section primarily addresses the effects of natural disasters on environmental health conditions and services. In the second section, environmental health measures are described that should be undertaken in each of three time frames: the predisaster, disaster, and postdisaster periods.
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Rabies is a devastating and societally important zoonotic disease, which is transmitted principally to humans through the bite of infected dogs. This acute, progressive viral encephalitis has the highest case fatality of any infectious disease and kills tens of thousands of people annually, with chi...ldren and impoverished communities being affected disproportionately.
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Developmental disabilities are common. Yet, children with developmental disabilities have been neglected in health systems planning and policy provisions for health and continue to experience stigmatization, institutionalization, barriers to access health care and inequalities in health and educatio...n outcomes.
Using findings from research and practice and guided by the tenets of international human rights conventions, this WHO-UNICEF Global Report on children with developmental disabilities provides principles and approaches to intentionally include the needs and aspirations of children and young people with developmental disabilities in policy, programming and public health monitoring. It makes the case for greater accountability and proposes 10 priority actions to accelerate changes towards inclusive environments and responsive multisectoral care systems for children with developmental disabilities.
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Updated 2 June 2022.#
This entry contains the Status Report of WHO Collaborating Centres in the Americas by Country and a new document with information of Collaborating Centres by Outcome of the Strategic Plan of the Pan American Health Organization 2020‑2025.