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Thursday, July 16, 2020 | History

4 edition of Epidemiology and phylogenetic analysis of West Nile virus in Ontario, Canada, 2002-2003 found in the catalog.

Epidemiology and phylogenetic analysis of West Nile virus in Ontario, Canada, 2002-2003

by Stephanie Anne Condotta

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  • 27 Currently reading

Published by Brock University, Centre for Biotechnology in St. Catharines, Ont .
Written in English

    Subjects:
  • West Nile virus -- Ontario.,
  • West Nile fever -- Epidemiology.,
  • Mosquitoes -- Ontario -- Phylogeny.

  • Edition Notes

    Statementby Stephanie Anne Condotta.
    The Physical Object
    Pagination115 leaves :
    Number of Pages115
    ID Numbers
    Open LibraryOL23408603M

    West Nile virus is now endemic throughout the contiguous United States, w human neuroinvasive disease cases and deaths reported since . Abstract. West Nile virus (WNV) is a member of the Japanese encephalitis (JE) antigenic complex in the family Flaviviridae, genus the mids the incidence of West Nile neuroinvasive disease has increased and the geographic range of the virus has expanded significantly.

    From until , West Nile virus (WNV) garnered scant medical attention as the cause of febrile illness and sporadic encephalitis in parts of Africa, Asia, and Europe. After the surprising detection of WNV in New York City in , the virus has spread dramatically westward across the United States, southward into Central America and the. Epidemiology. Occurrence. Every continent except Antarctica. 2. The virus was first isolated in in the West Nile district of Uganda. The first recorded outbreak in North America happened in New York City in 3. In Canada, the virus was first confirmed in birds in and the first human case was confirmed in Ontario in 5.

    West Nile virus has become endemic in all 48 contiguous United States as well as all Canadian provinces since its discovery in North America in New York City in 1 It has produced the 3 largest arboviral neuroinvasive disease (encephalitis, meningitis, or acute flaccid paralysis) outbreaks ever recorded in the United States, with nearly cases of neuroinvasive disease recorded each. Abstract. West Nile virus (WNV) exists in a bird–mosquito–bird cycle, with humans and horses as incidental hosts. The global epidemiology follows several patterns (1) widespread enzootic transmission throughout tropical Africa, the Caribbean, Central America, and northern South America without significant human or equine morbidity; (2) periodic human and equine outbreaks in the.


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Epidemiology and phylogenetic analysis of West Nile virus in Ontario, Canada, 2002-2003 by Stephanie Anne Condotta Download PDF EPUB FB2

1. Introduction. First Epidemiology and phylogenetic analysis of West Nile virus in Ontario in from a febrile illness case in Uganda, West Nile virus (WNV) caused infrequent outbreaks typically associated with mild febrile illnesses from the s through the s in Israel, Egypt, India, France, and South Africa [1–11].The first outbreak of neuroinvasive disease caused by WNV (WNND) was reported among the elderly in Israel in [6, 11].Cited by: EpidemiologyandPhylogeneticAnalysisofWestNilevirusin Ontario,Canada, StephanieAnneCondottaHBSc CentreforBiotechnology DepartmentofBiologicalSciences.

Epidemiology and phylogenetic analysis of West Nile virus in Ontario, Canada, / By Stephanie Anne. Condotta. Abstract. Since the discovery of West Nile (WN) virus in the Western Hemisphere many surveillance programs have been implemented to monitor the epidemiology and genetic variation of WN virus in North America.

This project was Author: Stephanie Anne. Condotta. West Nile Virus (WNV) first arrived in Ontario, Canada in and has since spread throughout most of the province, causing disease in humans. The provincial government established a province-wide surveillance program to monitor WNV transmission throughout the 36 regional health units.

Here we have acquired records of WNV human and mosquito surveillance from to to Cited by: Molecular Epidemiology and Evolution of West Nile Virus. analysis of West Nile virus isolates from Texas fail to asso ciate viral geneti Phylogenetic analysis of West Nile virus. Introduction. Despite more than a decade of pesticide use and awareness campaigns, West Nile virus (WNV; Family Flaviviridae, genus Flavivirus), an arthropod-borne virus that is transmitted through the bite of an infected mosquito, continues to be the leading cause of mosquito-borne disease in Canada [1–3].WNV is a member of the Japanese encephalitis virus serogroup along with.

West Nile virus (WNV) is the aetiological agent of the mosquito-borne zoonotic disease West Nile fever. The virus, first isolated in Uganda inevolved into two distinct lineages in sub-Saharan Africa (SSA) that subsequently spread to Epidemiology and phylogenetic analysis of West Nile virus in Ontario continents where the virus has evolved further as evident through phylogenetic analysis of extant genomes.

West Nile Virus (WNV) is transmitted through the bite of an infected mosquito. Most people infected with WNV do not show symptoms. Others can get fever, head and.

The West Nile Virus Surveillance Tool summarizes Ontario mosquito, human and weather data. It is updated each Wednesday from July to October, with data provided by local public health units (mosquito and human data), as well as Environment Canada (weather data).

It has been 20 years since West Nile virus first emerged in the Americas, and since then, little progress has been made to control outbreaks caused by this virus.

After its first detection in New York inWest Nile virus quickly spread across the continent, causing an epidemic of human disease and massive bird die-offs. Now the virus has become endemic to the United States, where an.

Global WNV Phylogenetics: Derivation of a Lineage. West Nile virus has been designated into at least five distinct Lineages (1–5) based on in-depth phylogenetic analyses of published sequences in six of the seven continents (except Antarctica) collected from to the present (Figure 1; Koutango virus is indicated as a possible Lineage 6) [9,10].

Learn about the different types of surveillance for West Nile virus and the reported number of cases in humans. For health professionals Get detailed information on West Nile virus, its diagnosis, clinical assessment and prognosis. West Nile virus has become endemic in all 48 contiguous United States as well as all Canadian provinces since its discovery in North America in New York City in 1 It has produced the 3 largest arboviral neuroinvasive disease (encephalitis, meningitis, or acute flaccid paralysis) outbreaks ever recorded in the United States, with nearly cases of neuroinvasive disease recorded each.

West Nile virus causes sporadic cases and outbreaks of human and equine disease in Europe (western Mediterranean and southern Russia inBelarus and. Keywords: Culex, mosquito, surveillance, epidemiology, public health, climate, West Nile virus Introduction West Nile virus (WNV) is a mosquito-borne pathogen of public health concern in Canada.

The virus was first identified in North America inwith the first human case of WNV illness in Canada confirmed in Ontario in (1,2). West Nile virus IgG and IgM ELISA testing is performed daily Monday to Friday during peak season (summer months) and twice per other times.

Turnaround time for ELISA IgG and IgM is up to 2 days during peak season and up to 5 days at other times from receipt by PHO laboratory. Deduced amino acid substitutions for West Nile virus isolates, Quebec, Canada Download: Download high-res image (KB) Download: Download full-size image; Supplementary Fig.

Fully resolved phylogenetic tree of published North American West Nile virus isolates and 26 Quebec isolates with tip labels. Author summary The West Nile virus (WNV) can cause severe neurological diseases including meningitis, encephalitis, and acute flaccid paralysis.

Differences in WNV genetics could play a role in the frequency of neurological symptoms from an infection. For the first time, we observed how geographically similar but genetically distinct lineages grow in cellular environments that agree with.

Since its initial isolation in Uganda in through the present, West Nile virus (WNV) has become an important cause of human and animal disease worldwide. WNV, an enveloped virus of the genus Flavivirus, is naturally maintained in an enzootic cycle between birds and mosquitoes, with occasional epizootic spillover causing disease in humans and horses.

The West Nile virus is one of the many members of the genus Flavivirus that are known to cause human disease.

The life cycle of the West Nile virus involves the microbe's transmission from nonhuman animals to humans by way of Aedes, Culex, or Anopheles mosquitoes.

The West Nile virus can infect horses, birds, dogs, and other mammals. To the Editor: West Nile virus (WNV) is a single-stranded, positive-sense RNA virus (≈11 kb) that is taxonomically classified within the family Flaviviridae, genus is found in Africa, Eurasia, Australia, and North America ().Comprehensive studies on phylogenetic relatedness of WNV strains have showed that WNV can be grouped into 5 lineages.A surveillance program has been in place since to detect the presence of West Nile virus (WNV) in Canada.

Serological assays are most appropriate when monitoring for human disease and.The emergence of West Nile virus (WNV) in the Western Hemisphere in poses an ongoing public health threat in North America as the most common cause of epidemic encephalitis in the United States ().WNV transmission is maintained in an enzootic cycle between mosquitoes and birds; equids, humans, other mammals, and some bird species act as dead-end hosts ().