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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La méningite est mortelle et débilitante ; elle frappe brutalement ; elle a de graves conséquences sanitaires, économiques et sociales et touche tous les âges de la vie dans tous les pays du monde. La méningite bactérienne peut être à l’origine d’épidémies, entraîner la mort dans les... 24 heures et un patient sur cinq peut rester handicapé à vie à la suite d’une infection. La plupart des cas et des décès dus à la méningite pourraient être évités par la vaccination mais les progrès obtenus pour la vaincre sont bien moins rapides que ceux réalisés contre d’autres maladies à prévention vaccinale.
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Front. Public Health, 02 July 2019 Sec. Infectious Diseases: Epidemiology and Prevention
Volume 7 - 2019 | https://doi.org/10.3389/fpubh.2019.00166
Chagas disease (CD) is an anthropozoonosis caused by the protozoan parasite Trypanosoma cruzi, that affects about 6–8 million people worldwide (1) a...nd causes approximately 50,000 deaths per year. Another 65–100 million people are living in areas at risk for infection worldwide (2–4). Even though over a century has passed since its discovery, CD remains one of the leading public health problems for most Latin American countries
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The main objective of this mission was to assess the level of preparedness of Guinea-Bissau in respect of the WHO consolidated checklist. The checklist helps countries to assess and test their level of readiness it is being used to identify concrete action to be taken and where countries will requir...e support from partners. It lists 10 key components and tasks for both countries and the international community that should be completed within 30, 60 and 90 days from the date of issue of the list, with minimal requirements for equipment, material and human resources.
The components include: overall coordination; rapid response teams; public awareness and community engagement; infection prevention and control; epidemiological and laboratory surveillance; contact tracing; points of entry; laboratory; social mobilization and risk communication; budget.
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Technical Update
Areas of Africa endemic for Buruli ulcer (BU), caused by Mycobacterium ulcerans, also have a high prevalence of human immunodeficiency virus (HIV), with adult prevalence rates between 1% and 5% (Maps). However, there is limited information on the prevalence of BU–HIV coinfection.... Preliminary
evidence suggests that HIV infection may increase the risk of BU disease (1–3). In the Médecins Sans Frontières project in Akonolinga, Cameroon, HIV prevalence was approximately 3–6 times higher among BU patients than the regional estimated HIV prevalence (2). Similarly in Benin and Ghana, BU
patients were 8 times and 3 times respectively more likely to have HIV infection than those without BU (1, 3). Further study is needed to clarify this association and enhance knowledge about the prevalence ofBU–HIV coinfection in endemic areas.
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There is an overabundance of information circulating about the new coronavirusdisease(COVID-19), which can make it hard for people to identify which information is reliable and trustworthy. Rumours and misinformation travel fast–especially through social media.This cannot only stop people from ado...pting preventive measures that keep them safebut even more worrying,adopting ineffective prevention measures, increasing their riskof infection
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Handbook of COVID-19 Prevention and Treatment, expecting to share their invaluable practical advice and references with medical staff around the world. This handbook compared and analyzed the experience of other experts in China, and provides good reference to key departments such as hospital infect...ion management, nursing, and outpatient clinics. This handbook provides comprehensive guidelines and best practices by China's top experts for coping with COVID-19.
This handbook, provided by the First Affiliated Hospital of Zhejiang University, describes how organizations can minimize the cost while maximizing the effect of measures to manage and control the coronavirus outbreak. The handbook also discusses why hospitals and other healthcare institutions should have command centers when encountering a large-scale emergency in the context of COVID-19. This handbook also includes the following:
- Technical strategies for addressing issues during emergencies.
- Treatment methods to treat the critically ill.
- Efficient clinical decision-making support.
- Best practices for key departments like inflection management and outpatient clinics.
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The leishmaniases are a group of diseases caused by Leishmania spp., which occur in cutaneous, mucocutaneous and visceral forms. They are neglected tropical diseases (NTDs), which disproportionately affect marginalized populations who have limited access to health care. HIV co-infected patients with... Leishmania infection are highly infectious to sandflies, and an increase in the coinfection rate in an endemic area is likely to increase the effective infective reservoir.
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The Government of Liberia (GoL) reports three additional EVD cases linked to the Margibi County cluster, including one in Liberia’s Montserrado County; new confirmed case total reaches six
Recently extended Operation Northern Push strengthens contact tracing and EVD prevention activities ...in Sierra Leone
The Government of Guinea (GoG) and EVD response actors investigate source of infection for EVD-positive nurse in Forécariah Prefecture, the area’s first confirmed case among health care workers since March
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Tropical Medicine and Infectious Disease 2017, 2(4), 50
This is a cross-sectional analysis of baseline data in a longitudinal study on asymptomatic, LF antigen-positive and -negative young people in Myanmar. Rapid field screening was used to identify antigen-positive cases and a group of antige...n-negative controls of similar age and gender were invited to continue in the study. ... Results demonstrate that sub-clinical changes associated with infection can be detected in asymptomatic cases. Further exploration of these low-cost devices in clinical and research settings on filariasis-related lymphedema are warranted.
https://doi.org/10.3390/tropicalmed2040050
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This collection of posters are intended for health care workers, biomedical engineers and staff of health facilities in charge of caring, cleaning, decontaminating and sterilizing respiratory medical equipment in hospitals and health facilities. They include checklists to ensure the optimal infectio...n prevention and control during their use and between patients.
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Временные рекомендации
17 марта 2020 г.
Данный документ представляет собой адаптированную версию временных рекомендаций, разработанных для ближневосточного респ...ираторного синдрома, вызванного коронавирусом (БВРС-КоВ), которые были опубликованы в июне 2018 г.1, и был составлен на основе опубликованных ВОЗ научно обоснованных рекомендаций, включая руководство «Infection prevention and control of epidemic- and pandemic-prone acute respiratory diseases in health care» (Профилактика инфекций и борьба с острыми респираторными инфекциями, способными вызывать эпидемии и пандемии, при оказании медико-санитарной помощи)2, а также имеющейся на сегодняшний день информации о COVID-19.
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This set of malaria awareness posters, created by the National Institute for Communicable Diseases (NICD), provides the general public in South Africa with clear visual messages about malaria prevention, symptoms and the importance of early treatment. Designed for community outreach, the posters enc...ourage key protective behaviours such as using bed nets, seeking prompt medical attention, and recognising the signs of infection.
Accessed on 20/06/2025.
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BioDrugs. 2023 Sep 20;37(6):737–756. doi: 10.1007/s40259-023-00623-4
There are many malaria vaccine candidates in development, with more than a dozen of these in clinical development. RTS,S/AS01 (also known as Mosquirix) is the most advanced malaria vaccine and was shown to have modest efficacy ...against clinical malaria in phase III trials in 5- to 17-month-old infants. Following pilot implementation trials, the World Health Organisation has recommended it for use in Africa in young children who are most at risk of infection with P. falciparum, the deadliest of the human malaria parasites.
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The new WHO guidelines provide clinical management recommendations for four of the most widespread arboviruses affecting humans: dengue, chikungunya, Zika, and yellow fever.
An integrated approach is vital, as these four diseases often present with similar symptoms, especially in the early stages... of infection, and multiple arboviruses may circulate simultaneously in certain regions. This makes clinical differentiation challenging, particularly where diagnostic testing is not readily available.
This guideline is available in online format on the MAGICapp platform
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Pregnant travelers face numerous risks, notably increased susceptibility to or severity of multiple infections, including malaria. Because pregnant women residing in areas non-endemic for malaria are unlikely to have protective immunity, travel to endemic areas poses risk of severe illness and pregn...ancy complications, such as low birthweight and fetal loss. If travel to malaria-endemic areas cannot be avoided, preventive measures are critical. However, malaria chemoprophylaxis in pregnancy can be challenging, since commonly used regimens have varying levels of safety data and national guidelines differ. Furthermore, although chloroquine and mefloquine have wide acceptance for use in pregnancy, regional malaria resistance and non-pregnancy contraindications limit their use. Mosquito repellents, including N,N-diethyl-m-toluamide (DEET) and permethrin treatment of clothing, are considered safe in pregnancy and important to prevent malaria as well as other arthropod-borne infections such as Zika virus infection. Pregnant travelers at risk for malaria exposure should be advised to seek medical attention immediately if any symptoms of illness, particularly fever, develop.
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Every two minutes, a child under the age of 5 dies from malaria. Under-five children accounted for 67 per cent of all malaria deaths worldwide in 2018. Most of them occurred in sub-Saharan Africa where an estimated 24 million children were infected with its deadliest form. In addition to being the t...hird-deadliest infectious disease for children, malaria infection and the costs of treatment traps families in a cycle of illness, suffering and poverty.This year’s World Malaria Day is marred by the emergence of the COVID-19 outbreak, which further threatens people’s lives and well-being. Public health officials are taking precautionary and often aggressive measures to limit transmission of this virus, including reductions in social movement, physical distancing, hand-washing and recommending the use of personal protection equipment in high-risk settings. However, while focusing on combating this disease, the world cannot afford to ignore other diseases, such as malaria.
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On 4 September 2025, the Ministry of Health of the Democratic Republic of the Congo (DRC) declared an outbreak of Ebola Virus Disease (EVD) in Kasai Province, following confirmation of Zaire ebolavirus by the National Institute of Biomedical Research (INRB) in Bulape and Mweka Health Zones. As of 19... September, there have been 48 total cases (38 confirmed, 10 probable) with 31 deaths (21 confirmed, 10 probable) and a CFR of 64.5%. Among laboratory confirmed cases, 16 deaths were recorded (CFR: 45.7%). Four deaths occurred among health workers, underscoring the risk of nosocomial transmission. Most cases (39.7%) are among adults aged 20 years and above, in a densely populated, remote, and under-resourced area.
The outbreak is driven by multiple risk factors, including transmission in health facilities with limited infection prevention and control (IPC) measures and personal protective equipment (PPE), incomplete contact tracing, delayed detection, and unsafe burial practices. High population mobility between Bulape and Tshikapa, reliance on traditional healers, and the concurrent mpox outbreak are further straining the fragile health system and increasing the risk of geographic spread.
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El objetivo del documento es orientar la categorización de riesgo, monitoreo y decisiones a ser tomadas para el personal de salud con potencial exposición a COVID-19. Esta guía puede ser modificada de acuerdo al dinamismo de la situación epidemiológica. Este documento debe leerse en conjunto co...n los documentos oficiales de la Dirección General de Vigilancia de la Salud del Ministerio de Salud Pública y Bienestar Social de Paraguay referentes a la infección por COVID-19.
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Herramienta de estimación de necesidades y costos de la profilaxis preexposición (PrEP). Instruccciones de uso. En particular, calcula 1) el número de personas que se beneficiarían de la PrEP, en cada población relevante; 2) el total de personas que el país o entidad tiene capacidad para cubri...r, y 3) el impacto presupuestario de la PrEP en las poblaciones. En estas instrucciones de uso se describen los pasos que se deben seguir y las consideraciones que se han de tener en cuenta al ejecutar la herramienta. Además, se incluye un modelo de informe para presentar los resultados del ejercicio a las partes interesadas en la introducción de la PrEP. La herramienta permitirá completar los ejercicios de estimación de necesidades y costos de PrEP de manera independiente y replicable. Se espera que el uso de estas instrucciones mejore la capacidad de planificación de este servicio esencial, junto con las demás intervenciones del marco de prevención combinada, para alcanzar el objetivo de reducción de nuevas infecciones por el VIH.
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