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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Specific action sheets offer useful guidance on mental health and psychosocial support and cover the following areas coordination assessment monitoring and evaluation protection and human rights standards human resources community mobilisation and support health services education dissemination of i...nformation food security and nutrition shelter and site planning and water and sanitationthe guidelines include a matrix with guidance for emergency planning actions to be taken in the early stages of an emergency and comprehensive responses needed in the recovery and rehabilitation phases
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For medical students and doctors
With the increase in frequency of disasters, there is a need to improve early warning systems (EWS) for EA to reduce the risks faced by children and their families. As a consequence, the term early warning, early action (EWEA) has become increasingly common among those responding to slow-onset disas...ters.
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at the national and acute health care facility level
This report describes the work done by WHO from January 2015 up to the end of December 2016 to address the long-term issues of survivor care, health-systems strengthening and research.
نظام مغشوش
سياسات الحكومة السورية لاستغلال المساعدات الإنسانية وتمويل إعادة الإعمار
The Road to Recovery. This synthesis report is based on three national studies on the evolution of the Ebola epidemic and its impact on Guinea, Liberia and Sierra Leone
WHO practical guidelines. 2nd edition
Towards the Peoples Health Assembly Book - 5
The Priority medicines for mothers and children 2011 list was updated following the 18th Expert Committee Meeting
on Selection and Use of Medicines, the release of new treatment guidelines and feedback from partners following
the 2011 version. In alignment with the UN Global strategy f...or women’s and children’s health; and the recently
launched UN Commission on life‐saving commodities for women and children, the title of this updated list is
renamed as Priority Life‐Saving Medicines for Women and Children.
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