Yellow fever in Chad

The Ministry of Health of Chad is launching an emergency mass-vaccination campaign against yellow fever from 22 February 2013, following laboratory confirmation of two cases in the country in December 2012.
Source: WHO Disease Outbreaks - Category: Infectious Diseases Source Type: news

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by Benoit de Thoisy, Natalia Ingrid Oliveira Silva, L ívia Sacchetto, Giliane de Souza Trindade, Betânia Paiva Drumond Optimise control strategies of infectious diseases, identify factors that favour the circulation of pathogens, and propose risk maps are crucial challenges for global health. Ecological niche modelling, once relying on an adequate framework and environmental descriptors can be a helpful tool for s uch purposes. Despite the existence of a vaccine, yellow fever (YF) is still a public health issue. Brazil faced massive sylvatic YF outbreaks from the end of 2016 up to mid-2018, but cases in human...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
In the last decades, a number of infectious viruses have emerged from wildlife or re-emerged, generating serious threats to the global health and to the economy worldwide. Ebola and Marburg hemorrhagic fevers, Lassa fever, Dengue fever, Yellow fever, West Nile fever, Zika, and Chikungunya vector-borne diseases, Swine flu, Severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and the recent Coronavirus disease 2019 (COVID-19) are examples of zoonoses that have spread throughout the globe with such a significant impact on public health that the scientific community has been called for a rapid int...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Abstract Despite the availability of a highly effective yellow fever virus (YFV) vaccine, outbreaks of yellow fever frequently occur in Africa and South America with significant mortality, highlighting the pressing need for antiviral drugs to manage future outbreaks. To support the discovery and development of antiviral drugs against YFV, we characterized a panel of rabbit polyclonal antibodies against the three YFV structural proteins and five non-structural proteins and demonstrated these antibody reagents in conjunction with viral RNA metabolic labeling, double-stranded RNA staining and membrane floatation assa...
Source: Antiviral Research - Category: Virology Authors: Tags: Antiviral Res Source Type: research
AbstractPurpose of ReviewAt the turn of the nineteenth century, yellow fever (YF) was considered the most dangerous infectious disease with high case fatality. Subsequent, mass vaccination campaigns coupled with widespread elimination of the YF mosquito vector significantly decreased YF cases and reduced outbreaks to the tropical and subtropical forested regions of Africa and South America.Recent FindingsHowever, recent (2016) large outbreaks in Angola, Democratic Republic of Congo (DRC), and South-Eastern Brazil, where previously had been demarcated as low-risk regions, have highlighted the possibility of a rapidly changi...
Source: Current Treatment Options in Infectious Diseases - Category: Infectious Diseases Source Type: research
This article is republished from The Conversation under a Creative Commons license. Read the original article. The post How Deforestation Helps Deadly Viruses Jump from Animals to Humans appeared first on Inter Press Service.
Source: IPS Inter Press Service - Health - Category: International Medicine & Public Health Authors: Tags: Environment Global Headlines Health TerraViva United Nations Source Type: news
On 15 April 2020, WHO received information regarding a confirmed case of yellow fever in Magandi village, Tchibanga city in Nyanga Province of southern Gabon, 590 km from the capital, Libreville. The case is an 83-year-old male with no known vaccination history for yellow fever. He had onset of symptoms on 30 January 2020 and presented to a health facility on 2 February 2020 with abdominal pain and jaundice. Between 2 February and 9 April, he consulted the Urban Health Centre in Tchibanga, the Christian Alliance Hospital in Bongolo and the University hospital in the capital Libreville where the case received anti-malarial ...
Source: WHO Disease Outbreaks - Category: Infectious Diseases Tags: news Source Type: news
On 20 April 2020, WHO received information regarding a confirmed yellow fever case in Galangashie health area, located 30 km from Mango village, Oti district, Savanes region in the northern part of Togo. The case is a 55-year-old woman with no vaccination history for yellow fever. She had onset of symptoms on 31 January 2020 and presented to a health facility on 3 February 2020 with fever and aches. The following day she developed jaundice and a blood sample was taken. On 7 February , the blood sample was transported to the national laboratory. On 10 February , the sample from the case was received at the national laborato...
Source: WHO Disease Outbreaks - Category: Infectious Diseases Tags: news Source Type: news
This study showed that conflicting information about vaccine safety led to concern about miscarriage. Furthermore, it was believed that vaccination during gestation would concurrently immunize the fetus by transplacental antibody transfer. Consultation of health workers at the vaccination site led to diverse recommendations. When vaccinating pregnant women, clear health communication is crucial. Vaccine recommendations should be obeyed, and health workers should be trained to address emerging vaccine concerns. Pregnant women should be informed that a booster dose is recommended to achieve lifelong immunity. After pregnancy...
Source: The American Journal of Tropical Medicine and Hygiene - Category: Tropical Medicine Authors: Tags: Am J Trop Med Hyg Source Type: research
A young boy in Pakistan receives an oral polio vaccine (OPV). Credit: Ashfaq Yusufzai/IPSBy Laura MackenzieMay 6 2020 (IPS) Interruptions to vaccination programmes caused by the COVID-19 pandemic could result in new waves of measles or polio outbreaks, health experts warn. A growing number of one-off immunisation campaigns and national routine vaccine introductions are being delayed amid social distancing and other measures to curb the spread of SARS-CoV-2, leaving millions unprotected. With both preventive campaigns and routine immunisations impacted, “we’ll have an increasing number of children who will becom...
Source: IPS Inter Press Service - Health - Category: International Medicine & Public Health Authors: Tags: Global Headlines Health TerraViva United Nations Source Type: news
CONCLUSION: The amotosalen/UVA PR system inactivated high titers of infectious YFV-17D in PC. This PR technology could reduce the risk of YFV TTI and help secure PC supplies in areas experiencing YFV outbreaks where massive vaccination campaigns are required. PMID: 31957887 [PubMed - as supplied by publisher]
Source: Transfusion - Category: Hematology Authors: Tags: Transfusion Source Type: research
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