Loading...
Please wait, while we are loading the content...
Similar Documents
Estimer le risque associé aux maladies vectorielles dans un contexte d’émergence : cas de la maladie de Lyme et du virus du Nil occidental au Québec
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ripoche, Marion |
| Copyright Year | 2018 |
| Abstract | Lyme disease is an emerging public health threat in Canada. Rapid detection of new risk areas is essential for timely application of prevention and control measures. In Canada, information on Lyme disease risk is collected through three surveillance activities: active tick surveillance, passive tick surveillance and reported human cases. However, each method has shortcomings affecting the ability to rapidly and reliably identify new risk areas. We investigated the relationships between risk signals provided by human cases, passive and active tick surveillance to assess the performance of tick surveillance for early detection of emerging risk areas. We used regression models to investigate the relationships between the reported human cases, Ixodes scapularis ticks collected on humans through passive surveillance and the density of nymphs collected by active surveillance from 2009– 2014 in the province of Québec. We then developed new risk indicators and validated their ability to discriminate risk levels used by provincial public health authorities. While there was a significant positive relationship between the risk signals provided by all three surveillance methods, the strongest association was between passive tick surveillance and reported human cases. Passive tick submissions were a reasonable indicator of the abundance of ticks in the environment (Se and Sp <0.70), but were a much better indicator of municipalities with >3 human cases reported over 5 years (Se=0.88; Sp=0.90). These results suggest that passive tick surveillance provides a timely and reliable signal of emerging risk areas for Lyme disease in Canada. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://papyrus.bib.umontreal.ca/xmlui/bitstream/handle/1866/20742/Ripoche_Marion_2017_these.pdf?isAllowed=y&sequence=4 |
| Alternate Webpage(s) | http://grezosp.com/wp-content/uploads/2017/11/Soutenance_Affiche_MarionRipoche.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
