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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Over the past 50 years, dengue has spread from nine to over a hundred countries, making it the most rapidly spreading vector-borne disease. Yet, dengue continues to have a low profile among policy-makers and donors and does not receive the media attention it deserves. While there is no vaccine or cu...re for dengue, it can be managed and prevented. We need a renewed commitment to integrated programming that includes improved management and diagnosis, increased awareness and community participation in controlling the vector and enhanced environmental sanitation
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The figures and findings reflected in the 2019 Humanitarian Needs Overview (HNO) represent the independent analysis
of the United Nations (UN) and its humanitarian partners based on information available to them. While the HNO aims
to provide consolidated humanitarian analysis and data to help inf...orm joint strategic humanitarian planning, many of
the figures provided throughout the document are estimates based on sometimes incomplete and partial data sets using
the methodologies for collection that were available at the time. The Government of Syria has expressed its reservations
over the data sources and methodology of assessments used to inform the HNO, as well as on a number of HNO findings.
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World Health Organisation Report on the global Tobacco Epidemic Rwanda Country profile (2017)
Promoting and protecting health is essential to human welfare and sustained economic and social development. This was recognized more than 30 years ago by the Alma-Ata Declaration signatories, who noted that Health for All would contribute
both to a better quality of life and also to global peace a...nd security
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A Public Health EOC (PHEOC) serves as a hub for coordinating the preparation for, response to, and recovery from public health emergencies. The preparation includes planning, such as risk and resource mapping, development of plans and procedures, and training and exercising. The response includes al...l activities related to investigation, response and recovery. The PHEOC also serves as a hub for coordinating resources and information to support response actions during a public health emergency and enhances communication and collaboration among relevant stakeholders.
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Trials (2017) 18:152, DOI 10.1186/s13063-017-1881-z
Action on behalf of unaccompanied and separated children should be guided by principles enshrined in international standards. The validity of these principles has been confirmed by experience and lessons learnt from conflicts and natural disasters in recent years. The objective of the present public...ation is to outline the guiding principles which form the basis for action in this regard.
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The Haiti Earthquake and Cholera Emergency appeal (MDRHT018) was implemented by the International Federation of Red Cross and Red Crescent Societies (IFRC) in collaboration with the Haitian Red Cross Society (HRCS) following the devastating earthquake on 14 August 2021, and the cholera outbreak on 2... October 2022.
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This manual aims to provide practical guidance to field workers in order to maximise the nutritional impact of food security & livelihoods (FSL) interventions. This requires the systematic use of a ‘nutrition lens’ at each step of the project cycle and a close collaboration between sectors.
Technical Note
Recently, the approach to hazardous events has undergone a considerable shift, away from reactive activities focused on managing and responding to events and towards a more proactive process of emergency and disaster risk management (DRM). The ultimate goal of this shift in focus is ...to prevent new and reduce existing disaster risks, a process known as disaster risk reduction (DRR), while strengthening individual, community, societal and global resilience.
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