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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Acclerating attainment of universal health coverage and bridging the access inequity gap
The National Tuberculosis Programme (NTP) of Rwanda (known as TB & ORD Division/IHDPC/RBC) is preparing to write their next National Strategic Plan and for this reason Rwanda was selected as a country to received technical assistance (TA) to conduct an assessment of their surveillance system using t...he surveillance checklist as input for the new strategy. This TA was provided under the USAID TBCARE I Core project on Monitoring and Evaluation, Operational Research and Surveillance (C7.08) developed a surveillance checklist with the objectives to assess a national surveillance system’s ability to accurately measure TB cases and deaths and to identify gaps in national surveillance systems that need to be addressed in order to improve TB surveillance.
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UNAIDS/WHO 2015 | Reference
National Operational Guidelines
Research Article
BMC Infectious Diseases 2012, 12:262; doi:10.1186/1471-2334-12-262
This manual has been developed to guide rapid risk assessment of acute public health risks from any type of hazard in response to requests from Member States of the World Health Organization (WHO). The manual is aimed primarily at national departments with health-protection responsibilities, Nationa...l Focal Points (NFPs) for the International Heath Regulations (IHR) and WHO staff. It should also be useful to others who join multidisciplinary risk assessment teams, such as clinicians, field epidemiologists, veterinarians, chemists, food-safety specialists.
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Report of a global meeting on yaws eradication surveillance, monitoring and evaluation: Geneva, 29–30 January 2018. World Health Organization.
The main objectives of the SOPs are to: (i) establish standards and timelines for response activities; and (ii) guide national governments and GPEI partners in key support functions.
This new version of the SOPs presents overall response requirements for dealing with type 1, 2 and 3 poliovirus fo...llowing monovalent type 2 oral polio vaccine (mOPV2) cessation. Version 2.4 will be valid until release of revised version 3.0 (anticipated May 2018).
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Antimalarial drug resistance has emerged as a threat to global malaria control efforts, particularly in the Greater Mekong subregion. Drawing on data collected through more than 1000 therapeutic efficacy studies as well as molecular marker studies of Plasmodium falciparum drug resistance, the Report... on antimalarial drug efficacy, resistance and response: 10 years of surveillance (2010–2019) presents a decade’s worth of data on drug efficacy and surveillance, as well as recommendations to monitor and protect the efficacy of malaria treatment in the decades to come.
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Despite a historical association with poor tolerability, a comprehensive review on safety of antileishmanial chemotherapies is lacking. We carried out an update of a previous systematic review of all published clinical trials in visceral leishmaniasis (VL) from 1980 to 2019 to document any reported ...serious adverse events (SAEs).
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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.