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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Le pilier 3 de la Stratégie technique mondiale de lutte contre le paludisme 2016–2030 consiste à faire de la surveillance du paludisme une intervention de base dans tous les pays d’endémie palustre et dans ceux ayant éliminé le paludisme mais où la transmission pourrait reprendre. Ce nouve...au manuel traite de thématiques qui se rapportent tant aux contextes dans lesquels on cherche à diminuer la charge du paludisme qu’à ceux où le paludisme est en cours d’élimination.
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Participant Manual
February 2011
Edition 3.0
PLoS Med 15(7): e1002615. https://doi.org/10.1371/journal. pmed.1002615
Received: 16/11/2013 - Accepted: 23/03/2014 - Published: 27/07/2014
Responses to epidemics, emergencies and disasters raise many ethical issues for the people involved, including public health specialists and policy makers. This training manual provides material on ethical issues in research, surveillance and patient care in these difficult contexts.
Blended Learning Modulef or the Health Extension Programme
In this study session, you will learn about the general features of faeco-oraldiseases: the main types commonly found in Ethiopia, their general symptomsand signs, how to treat mild cases and when to refer patients with severeconditions for... specialised treatment, or laboratory tests to confirm thediagnosis. You will also learn about the importance of giving effective healtheducation to your community on ways to prevent and control faeco-oraldiseases.
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Surveys are needed to guide trachoma control efforts in Mozambique, with WHO guidelines for intervention based on the prevalence of trachomatous inflammation–follicular (TF) in children aged 1–9 years and the prevalence of trichiasis in adults aged 15 years and above. We conducted surveys to com...plete the map of trachoma prevalence in Mozambique, concluding that it still represents a significant public health problem in many areas of Mozambique.
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This publication provides directions for a logical, evidence informed approach to selecting, developing, implementing and monitoring population-based interventions within the context of the double-burden of malnutrition in South-East Asia. The focus of this guide is on processed or ultra-processed p...re-packaged foods.
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Emergence of antimicrobial resistance is a result of the use, overuse and misuse of antibiotics both in humans and animals. In Ethiopia, there are indications on the misuse of antibiotics by health care providers’, unskilled practitioners, and drug consumers. These coupled with rapid spread of res...istant bacteria and inadequate surveillance contributed to the problem. Bacterial infections are the major causes of death in Ethiopia. Studies on antibacterial resistance and on bacterial infections have shown that emerging antibacterial resistance threatens the management of bacterial infections; however, the prevention and containment has received far too little attention.
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