The technical note by the Global Task Force on Cholera Control (GTFCC) discusses the use of Oral Cholera Vaccines (OCVs) for international workers and travelers in cholera-affected areas. It reviews the effectiveness of WHO-prequalified vaccines (Dukoral®, Shanchol™, and Euvichol®), emphasizing ...their role in preventing infection and reducing transmission risks.
The document highlights concerns about travelers contracting cholera in endemic regions and potentially spreading the disease upon returning home. While the overall risk is considered low, certain groups, such as humanitarian workers and travelers to high-risk areas like South Asia, face a higher exposure.
Recommendations include vaccination for emergency and relief workers who may come into direct contact with cholera patients or contaminated environments. However, routine vaccination for general travelers is not widely recommended. The note also calls for better surveillance and studies to assess the potential of vaccines in preventing international transmission.
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This article describes WHO's efforts to combat a cholera outbreak in South Sudan in July 2017. The organization received 500,000 doses of oral cholera vaccine (OCV) and was working with South Sudan's Ministry of Health to launch a vaccination campaign from July 28 to August 3, 2017. At the time, the... country had reported 17,785 cholera cases and 320 deaths since the outbreak began in June 2016. The vaccination campaign targeted four counties with high transmission rates: Tonj East, Kapoeta South, Kapoeta North, and Kapoeta East. South Sudan was implementing an integrated approach to control cholera, combining patient care, surveillance, social mobilization, water and sanitation improvements, and vaccination. The article notes that approximately 6 million people in South Sudan were facing starvation, with food insecurity and drought exacerbating the risk of cholera spread as people resorted to using contaminated water sources.
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The key to a lasting world free of all forms of poliovirus lies in rapidly interrupting all remaining endemic transmission of WPV in the endemic areas of Pakistan and Afghanistan. This is the only way to ensure that such strains do not re-emerge globally through international spread. It lays the cor...nerstone for the eventual cessation of all oral polio vaccine use, in order to eliminate the long-term risks associated with variant poliovirus strains, which is the GPEI’s top operational priority. The target for certifying the
world free of all WPV remains end-2026.
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After 100 years of chemotherapy with impractical and toxic drugs, an oral cure for human African trypanosomiasis (HAT) is available: Fexinidazole. In this case, we review the history of drug discovery for HAT with special emphasis on the discovery, pre-clinical development, and operational challenge...s of the clinical trials of fexinidazole. The screening of the Drugs for Neglected Diseases initiative (DNDi) HAT-library by the Swiss TPH had singled out fexinidazole, originally developed by Hoechst (now Sanofi), as the most promising of a series of over 800 nitroimidazoles and related molecules. In cell culture, fexinidazole has an IC50 of around 1 µM against Trypanosoma brucei and is more than 100-fold less toxic to mammalian cells. In the mouse model, fexinidazole cures both the first, haemolymphatic, and the second, meningoencephalitic stage of the infection, the latter at 100 mg/kg twice daily for 5 days. In patients, the clinical trials managed by DNDi and supported by Swiss TPH mainly conducted in the Democratic Republic of the Congo demonstrated that oral fexinidazole is safe and effective for use against first- and early second-stage sleeping sickness. Based on the positive opinion issued by the European Medicines Agency in 2018, the WHO has released new interim guidelines for the treatment of HAT including fexinidazole as the new therapy for first-stage and non-severe second-stage sleeping sickness caused by Trypanosoma brucei gambiense (gHAT). This greatly facilitates the diagnosis and treatment algorithm for gHAT, increasing the attainable coverage and paving the way towards the envisaged goal of zero transmission by 2030.
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- The goal of diagnostic testing for Ebola and Marburg virus diseases is to identify cases to provide timely and appropriate care and to stop disease transmission.
- All individuals meeting the case definition for Ebola or Marburg virus diseases should be tested.
- The recommended sample type ...for testing for orthoebolaviruses and orthomarburgviruses is whole blood or plasma for living patients, and oral swab for deceased individuals.
- Laboratory confirmation of Orthoebolavirus and Orthomarburgvirus infections and further species identification should be done using nucleic acid amplification testing (NAAT).
- If a suspected case tests negative (living patient) and the blood was drawn less than 72 hours after symptom onset, a second test should be performed with blood drawn more than 72 hours after symptom onset.
- All manipulations in laboratory settings of samples originating from suspected, probable or confirmed cases of Ebola and Marburg virus diseases should be conducted with appropriate biosafety measures according to a risk-based approach.
- Whole or partial genome sequencing can be used to characterize viruses and complement epidemiologic investigations.
- Member States are strongly encouraged to share genetic sequence data (GSD) in publicly accessible databases.
- Member States are required to immediately notify the World Health Organization (WHO) under the International Health Regulations (IHR) 2005 of positive laboratory results.
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The video "Cholera - Questions & Answers" by the World Health Organization (WHO) explains the essential aspects of cholera, an acute diarrheal disease caused by ingesting water or food contaminated with the Vibrio cholerae bacterium. It highlights the main symptoms, including severe watery diarrhea,... vomiting, and rapid dehydration, which can be fatal without proper treatment. Transmission occurs primarily through unsafe water and poor sanitation conditions. To prevent the disease, it is crucial to have access to clean drinking water, improve hygiene and sanitation, and use vaccination in high-risk areas. In case of infection, oral or intravenous rehydration is the primary treatment, while antibiotics are sometimes administered in severe cases. The video emphasizes the importance of rapid intervention and preventive measures to limit the spread of cholera and protect at-risk populations.
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Gambiense human African trypanosomiasis is a deadly infectious disease affecting West and Central Africa, South Sudan and Uganda, and transmitted between humans by tsetse flies. The disease has caused several major epidemics, the latest one in the 1990s. Thanks to recent innovations such as rapid di...agnostic tests for population screening, a single-dose oral treatment and a highly efficient vector control strategy, interruption of transmission of the causative parasite is now within reach. If indeed gHAT has an exclusively human reservoir, this could even result in eradication of the disease. Even if there were an animal reservoir, on the basis of epidemiological data, it plays a limited role. Maintaining adequate postelimination surveillance in known historic foci, using the newly developed tools, should be sufficient to prevent any future resurgence.
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Soil-transmitted helminths are a group of intestinal worms that include Ascaris lumbricoides (giant roundworm), Trichuris trichiura (whipworm), and Ancylostoma spp. (A. duodenale, A. ceylanicum) and Necator americanus (hookworms). Despite the clear biological differences among the different species,... their transmission is characterized by the same sequence of events: (i) infected individuals excrete worm eggs through their stool in soil; (ii) under optimal conditions of moisture and temperature the excreted eggs develop into infectious stages; and (iii) finally, infection occurs through oral uptake (Ascaris, Ancylostoma and Trichuris) or skin penetration (Ancylostoma and Necator) of these infectious stages (embryonated eggs and third stage larvae) that reside in the soil and/or in the environment (referring to their common name).
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The document provides guidance on managing acute diarrhoea outbreaks, specifically cholera and shigellosis. It outlines steps for identifying outbreaks, differentiating between cholera and shigellosis, and treating patients based on the severity of dehydration. Recommendations include the use of ora...l rehydration solutions (ORS), antibiotics in severe cases, and strict hygiene practices to prevent transmission. The document also emphasizes community protection measures such as disinfection of water sources, isolation of cases, and proper food hygiene. It is a practical resource for health workers to quickly respond to diarrhoeal disease outbreaks.
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The document provides guidance on managing acute diarrhoea outbreaks, specifically cholera and shigellosis. It outlines steps for identifying outbreaks, differentiating between cholera and shigellosis, and treating patients based on the severity of dehydration. Recommendations include the use of ora...l rehydration solutions (ORS), antibiotics in severe cases, and strict hygiene practices to prevent transmission. The document also emphasizes community protection measures such as disinfection of water sources, isolation of cases, and proper food hygiene. It is a practical resource for health workers to quickly respond to diarrhoeal disease outbreaks.
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The "Hygiene Awareness Manual" focuses on promoting improved hygiene practices within communities, emphasizing personal and household hygiene, water safety, and environmental health. It highlights the importance of handwashing, oral hygiene, and maintaining cleanliness of the skin and clothing as ke...y aspects of personal and family hygiene. Specific practices such as regular bathing and wearing clean clothes are also emphasized.
For household hygiene, the manual provides guidance on safe food preparation and storage, as well as keeping living spaces, kitchens, and latrines clean to prevent contamination. It also addresses water safety, emphasizing the need to store water in clean containers, treat it for safe consumption, and dispose of wastewater properly to avoid environmental contamination.
The manual underscores the significance of balanced nutrition and food safety, offering guidelines for cooking and preserving food to reduce health risks. It also delves into disease prevention, explaining the causes and transmission of waterborne and hygiene-related diseases, such as cholera and dysentery, and outlining effective methods to prevent them through proper sanitation and hygiene.
This comprehensive guide serves as a practical resource for community health workers and households, aiming to foster better hygiene practices, prevent diseases, and enhance overall health and well-being.
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The Cholera Q&A Fact Sheet provides essential information about cholera, including its causes, symptoms, treatment, and prevention. Cholera is an acute diarrheal disease caused by Vibrio cholerae, which spreads through contaminated water and food. It leads to rapid dehydration and can be fatal if un...treated. Symptoms range from mild diarrhea to severe dehydration, shock, and death.
Treatment primarily involves Oral Rehydration Therapy (ORT) to replace lost fluids, and in severe cases, intravenous fluids. Antibiotics are generally not recommended for mass treatment. Prevention focuses on safe drinking water, sanitation, hand hygiene, and proper food handling.
The document also discusses cholera vaccination, with three WHO-approved oral vaccines available. However, vaccines should be used alongside other control measures. The Global Task Force on Cholera Control (GTFCC) aims to eliminate cholera transmission in 20 countries by 2030 through improved sanitation, vaccination, and rapid outbreak response.
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A century after its discovery, Chagas' disease still represents a major public health challenge in Latin America. Moreover, because of growing population movements, an increasing number of cases of imported Chagas' disease have now been detected in non-endemic areas, such as North America and some E...uropean countries. This parasitic zoonosis, caused by Trypanosoma cruzi, is transmitted to humans by infected Triatominae insects, or occasionally by non-vectorial mechanisms, such as blood transfusion, mother to fetus, or oral ingestion of materials contaminated with parasites. Following the acute phase of the infection, untreated individuals enter a chronic phase that is initially asymptomatic or clinically unapparent. Usually, a few decades later, 40-50% of patients develop progressive cardiomyopathy and/or motility disturbances of the oesophagus and colon. In the last decades several interventions targeting primary, secondary and tertiary prevention of Chagas' disease have been attempted. While control of both vectorial and blood transfusion transmission of T cruzi (primary prevention) has been successful in many regions of Latin America, early detection and aetiological treatment of asymptomatic subjects with Chagas' disease (secondary prevention) have been largely underutilised. At the same time, in patients with established chronic disease, several pharmacological and non-pharmacological interventions are currently available and have been increasingly used with the intention of preventing or delaying complications of the disease (tertiary prevention). In this review we discuss in detail each of these issues.
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The document titled "Prevención y control del cólera" (Cholera Prevention and Control) provides essential guidance on preventing and managing cholera, a disease characterized by severe watery diarrhea and vomiting. Without prompt treatment, cholera can lead to death due to dehydration within hours.... The disease is primarily transmitted through the ingestion of food or water contaminated with the feces of an infected person.
To protect against cholera and other diarrheal diseases, the document emphasizes the importance of drinking safe water, such as bottled water with intact seals, boiled water, or water treated with chlorine products. Frequent handwashing with safe water and soap is recommended, and in the absence of soap, hands can be cleaned using ash or sand followed by rinsing with safe water. Proper sanitation practices, such as using latrines or burying feces and avoiding defecation near water sources, are crucial. The document also highlights safe food practices, including thoroughly cooking food (especially seafood), consuming it while hot, keeping it covered, and peeling fruits and vegetables. Ensuring the safe cleaning of kitchens and areas where the family bathes or washes clothes is also advised.
In case of diarrheal illness, the document stresses the immediate use of oral rehydration solution (ORS) to prevent dehydration and the importance of seeking medical attention as quickly as possible. Patients should continue ORS intake both at home and during transit to a health facility. These preventative measures and prompt treatment strategies are vital for reducing cholera transmission and mortality.
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The Ethiopia Multi-Sectorial Cholera Elimination Plan (2022-2028) outlines a national strategy to eliminate cholera in Ethiopia by 2028. The plan follows the Global Roadmap to End Cholera by 2030 and is based on six key pillars: Leadership & Coordination, Water, Sanitation & Hygiene (WASH), Surveill...ance & Reporting, Use of Oral Cholera Vaccines (OCV), Healthcare System Strengthening, and Community Engagement.
Ethiopia has historically faced recurrent cholera outbreaks due to poor sanitation, unsafe water, and weak health infrastructure. The plan prioritizes high-risk areas (hotspot woredas) and aims to reduce cholera-related mortality by 90% by 2028. It includes efforts to improve WASH conditions, strengthen disease surveillance, enhance rapid response capabilities, expand vaccination campaigns, and integrate cholera control into broader health policies.
The government, in collaboration with international partners such as WHO, UNICEF, and the Global Task Force for Cholera Control (GTFCC), will implement and monitor the plan. The estimated budget for the initiative is $390 million over eight years. Ethiopia aims to achieve zero cholera transmission in hotspot regions, ensuring sustainable public health improvements.
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Mem Inst Oswaldo Cruz , Rio de Janeiro, Vol. 110 (3): 377-386, May 2015
Detection, confirmation and management Salmonella Typhi outbreak
Different situations, risks, recommendations. Short brochure with pictograms. Available in: English, Turkish, French, Russian at: http://www.bzga.de/infomaterialien/fremdsprachige-materialien/ AND German at: http://www.bzga.de/infomaterialien/aidsaufklärung/hiv-übertragung-und-aids-gefahr/