Diphtheria is caused by Corynebacterium species, mostly by toxin-producing Corynebacterium diphtheriae and rarely by toxin-producing strains of C. ulcerans and C. pseudotuberculosis. The most common type of diphtheria is classic respiratory diphtheria, whereby the exotoxin produced characteristicall...y causes the formation of a pseudomembrane in the upper respiratory tract and damages other organs, usually the myocardium and peripheral nerves. Acute respiratory obstruction, acute systemic toxicity, myocarditis and neurologic complications are the usual causes of death. The infection can also affect the skin (cutaneous diphtheria). More rarely, it can affect mucous membranes at other non-respiratory sites, such as genitalia and conjunctiva.
C. diphtheriae is transmitted from person to person by intimate respiratory and direct contact; in contrast, C. ulcerans and C. pseudotuberculosis are zoonotic infections, not transmitted person-to-person. The incubation period of C. diphtheriae is two to five days (range 1– 10 days). A person is infectious as long as virulent bacteria are present in respiratory secretions, usually two weeks without antibiotics, and seldom more than six weeks. In rare cases, chronic carriers may shed organisms for six months or more. Skin lesions are often chronic and infectious for longer periods. Effective antibiotic therapy (penicillin or erythromycin) promptly terminates shedding in about one or two days.
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In order to help Member States understand what commercial foods for infants and young children are currently on the market, and to support implementation of the Guidance on ending inappropriate promotion of foods for infants and young children at the European level, the WHO Regional Office for Europ...e developed a methodology for identifying commercial baby foods available in retail settings and collecting data on their nutritional content, as well as various aspects of their packaging, labelling and promotion.
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This technical report describes the results of a cross-sectional survey conducted in Dushanbe, Tajikistan, between April and May 2016, as part of the FEEDcities Project – Eastern Europe and Central Asia. The aim was to describe the local street food environment: the characteristics of the vending ...sites, the food offered and the nutritional composition of the industrial and homemade foods usually consumed in these settings.
The study was part of a bilateral partnership between WHO and the Institute of Public Health of the University of Porto, Portugal, in collaboration with the Faculty of Medicine, the Faculty of Nutrition and Food Sciences and the Faculty of Pharmacy of the University of Porto (WHO registration numbers 2015/591370 and 2017/698514).
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Viral Load Scale-up and Decentralized Testing Experience in Botswana.
This AIDS 2016 presentation highlights how Botswana’s decentralized testing model provides an example of how “taking the services closer to the people, rather than people coming to the services” can increase access, when s...upported by strong partnerships.
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WHO/HTM/HIV/2007.01 WHO/HTM/TB/2007.380
The WHO Guide on Cholera Control in Complex Emergencies provides key steps for preparedness, prevention, and response to cholera and other diarrheal diseases in crisis situations. It highlights the importance of early warning systems, rapid response, and coordination among health agencies. The guide... outlines measures for case management, water sanitation, hygiene promotion, and outbreak containment, particularly in refugee camps and disaster-affected areas. It emphasizes community involvement, surveillance, and proper health infrastructure to reduce mortality and control disease spread in vulnerable populations.
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In May the Sixty-sixth World Health Assembly adopted resolution WHA66.12 (1) on 17 neglected tropical diseases (NTDs). Among other measures, the resolution urges Member States to:
• ensure country ownership of prevention, control, elimination and eradication programmes;
• expand and implemen...t interventions and advocate for predictable, long-term international financing for activities related to control and capacity strengthening;
• integrate control programmes into primary health-care services and existing programmes;
• ensure optimal programme management and implementation;
• achieve and maintain universal access to interventions and reach the targets of the roadmap.
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The Strategic Framework for Emergency Preparedness is a unifying framework which identifies the principles and elements of effective country health emergency preparedness. It adopts the major lessons of previous initiatives and lays out the planning and implementation process by which countries can ...determine their priorities and develop or strengthen their operational capacities. The framework capitalizes on the strengths of current initiatives and pushes for more integrated action at a time when there is both increased political will and increased funding available to support preparedness efforts.
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The Greater Horn of Africa is experiencing one of the worst food insecurity situations in decades. It is estimated
that more than 37 million people are in Integrated Food Security Phase Classification (IPC)1 phase 3 or above and approximately 7 million children under the age of five are acutely mal...nourished in the region. While finding food and safe water is the absolute priority, the health response is essential to avert preventable disease and death.
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Health communication has proven to play a crucial role in addressing diseases such as dengue, Zika and chikungunya, for which there are no definitive or easily accessible vaccines. In this context, this discipline becomes a fundamental tool to promote the change behavior and promote preventive pract...ices that reduce the transmission of these diseases. By not having a definitive medical solution, accurate and timely information, effectively disseminated through educational campaigns, media and communication channels public health, can significantly influence individual and community actions to control the spread of these mosquito-borne viruses. The accumulated research around the threat of the aforementioned arboviral diseases brings together a series of recommendations around specific communication activities, such as disseminating timely and accurate information that integrates public health concerns and the needs of information of the population, especially vulnerable groups such as women of childbearing age, pregnant women and health workers.
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On the road to ending TB
Highlights from the 30 highest TB burden countries
WHO published the first COVID-19 Strategic Response and Preparedness Plan (SPRP) on 3 February, 2020. This report highlights the main points of progress that were made up to 30 June 2020 under the three objectives outlined in the SPRP: scaling up international coordination and support; scaling up co...untry preparedness and response by pillar; and accelerating research and innovation. The report also discusses some of the key challenges faced so far, and provides an update on the resource requirements for the next phase of WHO’s response as part of an unprecedented whole-of-UN approach to the pandemic.
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