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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The objective of this manual is to guide managers of schistosomiasis and soil-transmitted helminthiases control programmes towards the elimination of these diseases as public health problems informed by evidence generated through monitoring and evaluation of these programmes. The manual complements ...the objectives outlined by the World Health Organization (WHO) in the road map for neglected tropical diseases 2021–2030 (“the road map”) (WHO, 2020a) and the monitoring and evaluation framework (WHO, 2021a), a companion document to the road map.
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UNHCR’s Public Health Strategy 2021-2025 is based on the lessons learnt, and builds on the achievements, of the Global Strategy for Public Health 2014-2018.
Progress was made on policies favouring inclusion and integration into national systems3 with 92% of 48 operations surveyed reporting refuge...es having access to national primary health care facilities under the same conditions as nationals and 96% reporting refugees having access to all relevant vaccines under the same conditions as nationals. While many refugee hosting countries have policies that allow refugees to access national health services, many face partial access, prohibitive out-of-pocket expenditures and other barriers including distance to facilities, language and provider acceptance. Furthermore, more work is needed on strengthening these systems to be able to meet the needs of both host communities and refugees.
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Climate change is a major risk to good development outcomes, and the World Bank Group is committed to playing an important role in helping countries integrate climate action into their core development agendas. The World Bank Group is committed to supporting client countries to invest in and build a... low-carbon, climate-resilient future, helping them to be better prepared to adapt to current and future climate impacts.
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Equity and Quality in Health: a People's Right
National AIDS and STI Control Program
This is the story of how an experiment in the north of Ghana changed the health of a nation. How health staff in remote and rural areas are working tirelessly to prevent the deaths of mothers and children. How a radical approach to health research, known as embedded research, has revolutionized how ...the government delivers health services under difficult circumstances.
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