Increased risk of endemic mosquito-borne diseases in Canada due to climate change.
California serogroup virus
Canada
Eastern equine encephalitis
West Nile virus
climate change
endemic
mosquito-borne disease
Journal
Canada communicable disease report = Releve des maladies transmissibles au Canada
ISSN: 1188-4169
Titre abrégé: Can Commun Dis Rep
Pays: Canada
ID NLM: 9303729
Informations de publication
Date de publication:
04 Apr 2019
04 Apr 2019
Historique:
entrez:
10
7
2019
pubmed:
10
7
2019
medline:
10
7
2019
Statut:
epublish
Résumé
There are currently over 80 species of mosquito endemic in Canada-although only a few of these carry pathogens that can cause disease in humans. West Nile virus, Eastern equine encephalitis virus and the California serogroup viruses (including the Jamestown Canyon and snowshoe hare viruses) are mosquito-borne viruses that have been found to cause human infections in North America, including in Canada. Over the last 20 years, the incidence of most of these endemic mosquito-borne diseases (MBD) has increased approximately 10% in Canada, due in large part to climate change. It is anticipated that both the mosquito lifecycle and virus transmission patterns will be affected by climate change, resulting in an increase in both the range and local abundance of several important mosquito species. Laboratory studies and mathematical modelling suggest that increased ambient temperatures, changes in precipitation and extreme weather events associated with climate change will likely continue to drive mosquito vector and MBD range expansion, increasing the duration of transmission seasons and leading to MBD-related epidemics. Furthermore, Canada's endemic MBDs have complex transmission cycles, involving multiple reservoir hosts (birds and mammals), multiple pathogens and multiple mosquito species-all of which may be sensitive to climate and other environmental changes, and making forecasting of potential emerging trends difficult. These expected climate-induced changes in mosquitoes and MBDs underline the need for continued (and expanded) surveillance and research to ensure timely and accurate evaluation of the risks to the public health of Canadians.
Identifiants
pubmed: 31285698
doi: 10.14745/ccdr.v45i04a03
pii: 450403
pmc: PMC6587694
doi:
Types de publication
Journal Article
Langues
eng
Pagination
91-97Déclaration de conflit d'intérêts
Conflict of interest: None.
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