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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Malaria is a prevalent cause of febrile illnesses in areas with high transmission, and its clinical presentation overlaps with initial signs of Ebola disease. For this reason, the effectiveness of the Ebola response in Guinea, Liberia and Sierra Leone can be optimized through the deployment of targe...ted measures to reduce the number of fever cases due to malaria
WHO recommends specific adaptations in the diagnosis of malaria and in LLIN distribution in countries heavily affected by the Ebola outbreak and mass drug administration using artemisinin-based combination therapies (ACTs) in areas where transmission of both Ebola and malaria is high and access to malaria treatment is very low.
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These guidelines provide specific recommendations and expert suggestions — for national policy-makers and programme managers and their partners and stakeholders— on prioritizing, planning and providing HIV testing, counselling, treatment and care services for adolescents
Prompt, effective antimalarial treatment, and supportive care can substantially reduce the rate of mortality from severe malaria. However, many children in malaria-endemic countries do not have access to health facilities or a qualified health care provider and do not receive the necessary care in a... timely fashion. Without rapid detection of danger signs and access to effective treatment, including pre-referral treatment that can be administered in the community level, many of these children with severe malaria die.
In situations where there is no immediate access to a health care facility, WHO recommends the administration of a standard dose of an effective antimalarial medicine as pre-referral treatment before referral to a facility at which complete treatment can be administered.
Rectal artesunate is the WHO-recommended pre-referral intervention in situations where artesunate injection are not feasible for children under the age of 6 years with suspected severe malaria. The intervention reduces the risk of death or permanent disability by up to 50% provided the child is referred to a health facility at which complete treatment can be administered.
This field guide is aimed at supporting the effective deployment of RAS as pre-referral treatment of suspected severe malaria in line with the WHO malaria guidelines.
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Integrated HIV Behavioral and Serologic Surveillance
HIV/TB Research Meeting; March 3, 2013
The aim of the meeting was to broaden the network’s initiatives. Preliminary work involved integrating laboratory testing for skin NTDs other than Buruli ulcer, such as cutaneous leishmaniasis, mycetoma, leprosy and yaws, while extending the network’s reach to encompass additional laboratories.
Rabies has an enormous impact on both agriculture and conservation biology, but its greatest burden is undeniably on public health. As such, routine methods for rapid risk assessment after human exposures to rabies as well as applications for laboratory-based surveillance, production of biologicals ...and management of this infectious disease are critical. Given its mandate to improve human health and control disease among its Member States, WHO has led the production of this fifth edition of Laboratory techniques in rabies.
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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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Integrated Management of Childhood Illness (IMCI) is an integrated approach to child health that focuses on the holistic well-being of the child. IMCI aims to reduce death, illness and disability, and to promote improved growth and development among children under five years of age. IMCI includes bo...th preventive and curative elements that are implemented by families and communities as well as by health facilities.
This booklet contains useful information on childhood sickness and offers practical guidance on diagnosis and treatment of said illnesses. it is divided into 2 parts, one for infants (new born until 2 months) and from 2 months to 5 years. It also includes:
Antiretroviral Therapy ART) treatment for children
Skin problems
Counselling the mother or caregiver on infant and you child feeding
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HAT diagnosis relies on laboratory techniques because clinical signs and symptoms are unspecific. Serodiagnostic tests exist only for Tbg and are based on the detection of specific antibodies, thus they are not confirmatory of infection. With the current low disease prevalence, the positive predicti...ve value of serological tests is particularly low. Field-applicable tools include the card agglutination test for trypanosomiasis (CATT) used mainly in active screening by specialized mobile teams, and the rapid diagnostic tests that are more suitable for individual testing at point-of-care. Confirmation of Tbg infection requires microscopic examination of body fluids necessitating specific training. The best performing methods are laborious and reach 85–95% diagnostic sensitivity when performed by skilled personnel.
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This document provides a generic model that can be used for risk assessment of exposure to insecticide products applied as indoor residual sprays. It aims to harmonize the risk assessment of such insecticides for public health use in order to generate comparable data for their registering and labell...ing by national regulatory authorities. The assessment considers both adults and children (all age groups) as well as people in the following specific categories:
- those preparing the spray;
- those applying the spray;
- residents living in the treated houses;
- residents who participate in preparing and applying insecticides.
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Las presentes directrices contienen nuevas recomendaciones que se han consolidado aquí de forma integrada con las recomendaciones ya existentes que permanecen sin cambios y con las que se han actualizado tras una nueva evaluación en que se han utilizado los mismos métodos rigurosos, tanto para la...s recomendaciones nuevas como para las recomendaciones actualizadas.
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