Mosquitoes Inject High Doses of West Nile Virus While Feeding
Author Information
Author(s): Styer Linda M, Kent Kim A, Albright Rebecca G, Bennett Corey J, Kramer Laura D, Bernard Kristen A
Primary Institution: Arbovirus Laboratories, Wadsworth Center, New York State Department of Health
Hypothesis
How much West Nile virus is inoculated by mosquitoes while feeding on live hosts?
Conclusion
Mosquitoes inoculate high doses of West Nile virus into host tissues while probing and low doses directly into the blood.
Supporting Evidence
- Mosquitoes inoculate high doses of WNV into host tissues.
- Doses are 10 to 1,000 times higher than previous estimates.
- Direct introduction of virus into the blood may alter viral tropism.
- Most of the virus was recovered from the section of tissue that the mosquito fed on.
Takeaway
When mosquitoes bite, they can put a lot of virus into the animal they are feeding on, which can make it sick.
Methodology
An in vivo assay was developed to measure the amount of West Nile virus inoculated by mosquitoes while feeding on live hosts.
Potential Biases
Potential bias in the selection of mosquito species and experimental conditions.
Limitations
The study may not account for all variables affecting virus inoculation, such as mosquito species behavior in natural settings.
Participant Demographics
The study involved various mosquito species and live animal hosts including mice and chicks.
Statistical Information
P-Value
<0.0001
Confidence Interval
95% CI: 66 to 96.7 min
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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