Risk maps to predict West Nile virus spread a year in advance

(University of Malaga) Knowing the environmental and human-related variables that characterize the favorable areas for the incidence of the West Nile virus, a flavivirus that is transmitted from birds to humans by mosquitoes, is essential to identify those places in Europe at high risk of experiencing outbreaks, even before these are registered, thus enabling preventive measures to be taken.
Source: EurekAlert! - Infectious and Emerging Diseases - Category: Infectious Diseases Source Type: news

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In conclusion, the earlier a zoonotic pathogen can be detected in the environment, in wildlife or in domestic animals; and the better human, animal and environmental surveillance communicate with each other to prevent an outbreak, the lower are the cumulative costs.
Source: Infectious Diseases of Poverty - Category: Infectious Diseases Source Type: research
Abstract Thresholds for disease extinction provide essential information for the prevention and control of diseases. In this paper, a stochastic epidemic model, a continuous-time Markov chain, for the transmission dynamics of West Nile virus in birds is developed based on the assumptions of its analogous deterministic model. The branching process is applied to derive the extinction threshold for the stochastic model and conditions for disease extinction or persistence. The probability of disease extinction computed from the branching process is shown to be in good agreement with the probability approximated from n...
Source: Acta Biotheoretica - Category: Biomedical Science Authors: Tags: Acta Biotheor Source Type: research
CONCLUSIONS: The estimated TT risk in Australia attributable to returning donors from the European Union and neighboring countries in 2018 was very small, and additional risk mitigation strategies were not indicated. In the context of such low TT risks, a simpler but effective approach would be to monitor the number of weekly reported West Nile fever cases and implement risk modeling only when the reported cases reached a predefined number or trigger point. PMID: 32869276 [PubMed - as supplied by publisher]
Source: Transfusion - Category: Hematology Authors: Tags: Transfusion Source Type: research
West Nile virus (WNV) is a mosquito-borne virus of public health importance. Currently, there is no FDA approved vaccine available against WNV infection in humans. Therefore, the early diagnosis of the WNV infection is important for epidemiologic control and timely clinical management in areas where multiple Flaviviruses are endemic. The present study aimed to develop reverse transcription polymerase spiral reaction (RT-PSR) assay that rapidly and accurately detects the envelope (env) gene of WNV. RT-PSR assay was optimized at 63°C for 60 min using real-time turbidimeter or visual detection by the addition of SYBR Gree...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
ConclusionsThe largest number of human cases of WNV infection ever recorded in Greece occurred in 2018, with a wide geographical distribution, suggesting intense virus circulation. Enhanced surveillance is vital for the early detection of human cases and the prompt implementation of response measures.
Source: Eurosurveillance - Category: Infectious Diseases Authors: Source Type: research
(CNN) — Parents and pediatricians need to be on the lookout in the coming months for a rare, paralyzing condition that affects young children, the Centers for Disease Control and Prevention said Tuesday. The polio-like condition, called acute flaccid myelitis or AFM, tends to peak every other year, and the last surge of cases was in 2018, when 238 cases were diagnosed across the US, the CDC said. Read: Acute Flaccid Myelitis Fact Sheet This year is likely to see another upsurge but things will be complicated by the coronavirus pandemic. “AFM is a priority for CDC as we prepare for a possible outbreak this ...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - Category: Consumer Health News Authors: Tags: Boston News Featured Health Syndicated CBSN Boston Acute Flaccid Myelitis CNN Source Type: news
ConclusionsThe largest number of human cases of WNV infection ever recorded in Greece occurred in 2018, with a wide geographical distribution, suggesting intense virus circulation. Enhanced surveillance is vital for the early detection of human cases and the prompt implementation of response measures. PMID: 32794446 [PubMed - in process]
Source: Euro Surveill - Category: Infectious Diseases Authors: Tags: Euro Surveill Source Type: research
Authors: Kalantari M, Salehi-Vaziri M, Pouriayevali MH, Baniasadi V, Salmanzadeh S, Kharat M, Fazlalipour M Abstract BACKGROUND &OBJECTIVES: West Nile virus (WNV) is a neurotropic Flavivirus transmitted to humans through mosquito bites. As there is no specific antiviral treatment or approved vaccine against WNV, control and prevention of the infection is the best strategy to reduce the burden of WNV-related diseases. The circulation of WNV has been indicated in several regions of Iran including the Khuzestan province. Considering the complex ecology of WNV, the latest data are necessary for the implementation o...
Source: Journal of Vector Borne Diseases - Category: Infectious Diseases Tags: J Vector Borne Dis Source Type: research
Ongoing destruction of nature will result in stream of animal diseases jumping to humans, says reportCoronavirus – latest updatesSee all our coronavirus coverageThe world is treating the health and economic symptoms of the coronavirus pandemic but not the environmental cause, according to the authors of aUN report. As a result, a steady stream of diseases can be expected to jump from animals to humans in coming years, they say.The number of such“zoonotic” epidemics is rising, from Ebola to Sars to West Nile virus and Rift Valley fever, with the root cause being the destruction of nature by humans and the ...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Coronavirus outbreak Environment Wildlife Infectious diseases Farming Medical research Science World news United Nations Health Sars Meat industry Farm animals Source Type: news
Gil Oliva Single-stranded positive RNA ((+) ssRNA) viruses include several important human pathogens. Some members are responsible for large outbreaks, such as Zika virus, West Nile virus, SARS-CoV, and SARS-CoV-2, while others are endemic, causing an enormous global health burden. Since vaccines or specific treatments are not available for most viral infections, the discovery of direct-acting antivirals (DAA) is an urgent need. Still, the low-throughput nature of and biosafety concerns related to traditional antiviral assays hinders the discovery of new inhibitors. With the advances of reverse genetics, reporter re...
Source: Viruses - Category: Virology Authors: Tags: Review Source Type: research
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