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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Data Collection: Recommended Surgical and Anaesthesia Care Indicators
PLoS Negl Trop Dis 16(11): e0010908. https://doi.org/10.1371/journal.pntd.0010908
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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How to successfully apply for, administer, and manage the Zithromax® donation for trachoma elimination
To its credit, Chile has implemented a highly successful vaccine program and taken a number of other important public health measures to improve the well-being of its inhabitants. Nevertheless, these measures have proved insufficient to curb the spread of the virus and ensure full compliance wit...h Chile’s obligations to respect, protect and
fulfil the right to health. It is in this context that this report examines the human rights impacts of the pandemic and the responses of the Chilean authorities.
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This paper is an initial compilation of the promising practices on risk communication and community engagement that have developed in Europe during the COVID pandemic, in complementarity to the UNHCR’s Practical Recommendations and Good Practice to Address Protection Concerns in the Context of the... COVID-19 Pandemic.It seeks to document and share such practices, but also to inspire new initiatives, foster exchange, and further develop a community of practice within the region.
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Operational Guidelines. Revised Edition
PLoS Medicine Vol. 6 no. 10 (2009) e1000165