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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RBC/IHDPC/ EID Division | November2011 - The aim of the standard operating procedures is to guide health care providers and public health
experts from various levels of the health system in the implementation of enhanced surveillance of meningococcal meningitis.
The occurrence of a high percentage of couterfeit medicines on the global medicines market is often attributed to a lack of effective regulation and a weak enforcement capacity. This review, while focusing on counterfeit medicines and medical devices in developing countries, will present information... on their impact and how these issues can be addressed by regulation and control of the supply chain using technology appropriate to the developing world.
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In the battle against diseases like Zika and dengue, knowledge is power. Climate change is shifting the
distribution of mosquitoes and to new areas. Empowering communities is essential in reaching and pro-
tecting the most vulnerable individuals and households. Vector control programmes, community... empow-
erment and awareness campaigns are proven strategies to reduce the burden of vector-borne diseases.
Red Cross and Red Crescent volunteers can play a key role in community and school outreach activities for Zika, dengue and chikungunya prevention. These community-based activities need to be sustained to
ensure long-lasting disease control.
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Healthy communities rely on well-functioning ecosystems. They provide clean air, fresh water, medicines and food security. They also limit disease and stabilize the climate. But biodiversity loss is happening at unprecedented rates, impacting human health worldwide, according to a new state of knowl...edge review of the Convention on Biological Diversity (CBD) and WHO.
The report synthesizes the available information on the most important inter-linkages between biodiversity, ecosystem stability, and epidemic infectious diseases such as the Ebola virus; and the connection between biodiversity, nutritional diversity and health. It also covers the potential benefits of closer partnerships between conservation and health, from improved surveillance of infectious diseases in wildlife and human populations, to promoting access to green spaces to promote physical activity and mental health. It also highlights the many areas in which further research is needed.
The Joint report hopes to provide a useful reference for the Sustainable Development Goals and post-2015 development agenda, which represents an unique opportunity to promote integrated approaches to biodiversity and health by highlighting that biodiversity contributes to human well-being, and highlighting that biodiversity needs protection for development to be sustainable.
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The World Heart Federation (WHF) is a leading global advocate for stronger legislation and policies regarding cardiovascular disease (CVD) and its risk factors, including raised cholesterol. The present Cholesterol Advocacy Toolkit 2022 provides WHF member organizations with information as well as p...ractical tools to
support cholesterol advocacy at the local and regional levels.
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This publication gives a broad vision of what a comprehensive approach to cervical cancer prevention and control means. In particular, it outlines the complementary strategies for comprehensive cervical cancer prevention and control, and highlights the neners. This new guide updates the 2006 edition... and includes the recent promising deve
ed for collaboration across programmes, organizations and partl-
opments in technologies and strategies that can address the gaps between the needs for and availability of services for cervical cancer prevention and control.
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This document provides interim guidance on the prevention, identification and management of health worker infection in the context of COVID-19. It is intended for occupational health departments, infection prevention and control departments or focal points, health facility administrators and public ...health authorities at both the national and facility level.
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This Birth Defect Surveillance facilitator (train-the-trainer) guide 2nd edition covers foundational skills needed to begin the development, implementation and ongoing improvement of a congenital anomaly surveillance programme, whether population-based or hospital-based, in particular for countries ...with limited resources.
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Zika and dengue viruses remain significant public health threats. These viruses share the same Aedes (Stegomyia) mosquito vectors and geographic distributions but infections cannot be readily distinguished clinically and need to be differentiated from each other, and from other circulating arboviral... and non-arboviral pathogens, using laboratory tests. This document provides guidance on current testing strategies for Zika and dengue virus infections with updates to the previous interim guidance for laboratory testing for ZIKV, addressing pregnant and non-pregnant patients respectively, and incorporates current guidance for dengue virus diagnostic testing. The choice of laboratory assays and interpretation of test results require careful consideration of epidemiology, patient history, and limitations of existing diagnostic tests.
This interim guidance is for use by staff of laboratories testing for Zika and dengue virus infections and for clinical practitioners and public health professionals providing clinical management or surveillance.
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This concept note describes the methods used to assess the prevalence of any HIVDR and HIVDR by PMTCT exposure among children less than 18 months of age using remnant dried blood spot specimens from early infant diagnosis over a 12-month period
The Libyan national action plan has been aligned with WHO five objectives. Analysis of the current situation and addressing the gaps and the needs to reach the main goal “one health” approach involves several national sectors and actors, including human and veterinary health, agriculture and foo...d and drug control center and environmental agencies. Therefore, a large committee of all stakeholders was formed with four technical subcommittees were established to addresses every aspect to contain antimicrobial resistance in the country.
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The document provides a detailed overview of cholera, including its clinical features, diagnosis, treatment, and prevention. It explains the causes of cholera, its symptoms such as severe diarrhea and dehydration, and the importance of rehydration therapy (oral or intravenous) to reduce mortality. T...he document also emphasizes public health measures, including access to clean water, proper sanitation, and vaccination, as essential strategies to control and prevent cholera outbreaks. It serves as a comprehensive resource for healthcare professionals managing cholera cases and outbreaks.
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A clear understanding of the knowledge, attitudes and practices (KAP) of a particular community is necessary in order to improve control of human African trypanosomiasis (HAT).New screening and diagnostic tools and strategies were introduced into South Sudan, as part of integrated delivery of primar...y healthcare. Knowledge and awareness on HAT, its new/improved screening and diagnostic tools, the places and processes of getting a confirmatory diagnosis and treatment are crucial to the success of this strategy.
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Water, sanitation and hygiene (WASH) are critical in the prevention and care for all of the 17 neglected tropical diseases (NTDs) scheduled for intensified control or elimination by 2020.
Provision of safe water, sanitation and hygiene is one of the five key interventions within the global NTD ...roadmap. Yet to date, the WASH component of the strategy has received little attention and the potential to link efforts on WASH and NTDs has been largely untapped.
Focused efforts on WASH are urgently needed if the global NTD roadmap targets are to be met. This is especially needed for NTDs where transmission is most closely linked to poor WASH conditions such as soil-transmitted helminthiasis, schistosomiasis, trachoma and lymphatic filariasis.
This strategy aims to mobilise WASH and NTD actors to work together towards the roadmap targets.
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The Journal of Infectious Diseases, jiy435, https://doi.org/10.1093/infdis/jiy435.
Many outbreaks reported high proportions of infected HWs. Similar HW infection rates and exposure risk factors in both past and recent EVD and MVD outbreaks emphasize the need to improve the implementation of approp...riate infection control measures consistently across all healthcare settings.
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Health communication has proven to play a crucial role in addressing diseases such as dengue, Zika and chikungunya, for which there are no definitive or easily accessible vaccines. In this context, this discipline becomes a fundamental tool to promote the change behavior and promote preventive pract...ices that reduce the transmission of these diseases. By not having a definitive medical solution, accurate and timely information, effectively disseminated through educational campaigns, media and communication channels public health, can significantly influence individual and community actions to control the spread of these mosquito-borne viruses. The accumulated research around the threat of the aforementioned arboviral diseases brings together a series of recommendations around specific communication activities, such as disseminating timely and accurate information that integrates public health concerns and the needs of information of the population, especially vulnerable groups such as women of childbearing age, pregnant women and health workers.
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Recency assays use one or more biomarkers to identify whether HIV infection in a person is recent (usually within a year or less) or longstanding. Recency assays have been used to estimate incidence in representative cross-sectional surveys and in epidemiological studies to better understand the pat...terns and distributions of new and longstanding HIV infections.
This technical guidance outlines best practices regarding the appropriate use of HIV recency assays for surveillance purposes and updates 2011 technical guidance from the World Health Organization (WHO) and the Joint United Nations Programme on HIV/AIDS (UNAIDS) on the use of HIV recency assays.
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Trachoma is the leading infectious cause of blindness worldwide. In April 2023, it was a public health problem
in approximately 40 countries, with an estimated 116 million people at risk and 1.5 million people affected
by the late blinding stage of the disease (1). About 84% of those at risk of tr...achoma are in the World Health
Organization (WHO)’s African Region; about 52% of those at risk of trachoma live in Ethiopia
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Five months after the beginning of the desert locust upsurge in the Greater Horn of Africa and Yemen, and four months since the launch of the response plan (24 January 2020) a total of USD 130 million have been mobilized in the region.
As described in the recently published Food and Agriculture Org...anization of the United Nations (FAO) quarterly report (January to April 2020), a lot has been achieved already, thanks to generous contributions from resource partners and affected governments.
But bringing a desert locust upsurge under control and mitigating its impact on livelihoods and food security requires a prolonged effort and numerous factors could influence the duration and magnitude of the problem, including the widespread presence of COVID-19.
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