Mosquitoes and West Nile Virus: Who Can Transmit It?
Author Information
Author(s): Michael R. Sardelis, Michael J. Turell, David J. Dohm, Monica L. O'Guinn
Primary Institution: Uniformed Services University of the Health Sciences
Hypothesis
Which North American mosquito species can transmit West Nile virus?
Conclusion
Several North American mosquito species, particularly Culex species, are capable of transmitting West Nile virus, with varying levels of efficiency.
Supporting Evidence
- Culex restuans and Cx. salinarius were found to be efficient laboratory vectors for West Nile virus.
- Cx. nigripalpus and Cx. quinquefasciatus were competent but only moderately efficient vectors.
- Coquillettidia perturbans was identified as an inefficient laboratory vector.
- Transmission rates for Culex species ranged from 10% to 55%, while Cq. perturbans had a transmission rate of less than 2%.
Takeaway
Some mosquitoes can spread a virus that makes people and animals sick. This study found out which mosquitoes can do that.
Methodology
Laboratory studies were conducted to evaluate the vector competence of several mosquito species by allowing them to feed on infected chickens and then testing for virus transmission.
Limitations
The study was conducted in a laboratory setting, which may not fully replicate natural conditions.
Statistical Information
P-Value
<0.01
Confidence Interval
95%
Statistical Significance
p<0.01
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