Asian tiger mosquito presents low danger for Zika infection break outs


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IMAGE: A blood engorged Asian tiger mosquito (Aedes albopictus) taking its blood meal on a human arm.
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Credit: Albin Fontaine and Céline Jourdan, 2020 (CCBY 2.0)

The Asian tiger mosquito does not position a significant danger for Zika infection upsurges, according to a research study released December 31 in the open-access journal PLOS Pathogens by Albin Fontaine of the Institut de Recherche Biomédicale des Armées, and associates.

Zika infection has actually set off big break outs in human populations, in many cases triggering genetic defects, fetal loss, or neurological issues in grownups. While the yellow fever mosquito Aedes aegypti is thought about the main vector of Zika infection, the Asian tiger mosquito Aedes albopictus has actually been revealed experimentally to transfer the infection and was associated with numerous transmissions of the infection in France in 2019. Stemming from Southeast Asia, Ae. aegypti is an aggressive biter that has actually attacked the world and is now present on all populated continents, consisting of temperate Europe, due to its capability to withstand extreme winter season conditions. As the 2nd crucial vector of human viral pathogens, Ae. albopictus is displacing Ae. aegypti populations due to competitive benefits. However it is not understood if Ae. albopictus might activate massive Zika infection upsurges.

To resolve this concern, the scientists exposed Ae. albopictus to Zika infection and evaluated infection rates in experiments, designed the characteristics of Zika virus infection within specific human beings, and utilized epidemiological simulations. The greatest danger of transmission happened throughout the pre-symptomatic phase of the illness. At this dosage, mosquito infection possibility was approximated to be 20%, and 21 days were needed to reach typical systemic infection rates. In spite of these undesirable attributes for transmission, Ae. albopictus was still able to activate big break outs in a simulated environment in the existence of adequately high mosquito densities and biting rates. According to the authors, active monitoring and obliteration programs must be carried out in areas inhabited by Ae. albopictus to preserve the low danger of Zika infection break outs.

The authors conclude, “The complementary mix of dose-dependent speculative infection, modeling of intra-human viremia characteristics, and in silico epidemiological simulations verifies the low epidemic capacity of Aedes albopictus for Zika infection.”

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Peer-reviewed; Circumstance/ modeling; Speculative research study; Animals; Cells

In your protection please utilize this URL to supply access to the easily readily available post in PLOS Pathogens:
http://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1009068

Citation: Lequime S, Dehecq J-S, Matheus S, de Laval F, Almeras L, Briolant S, et al. (2020) Designing intra-mosquito characteristics of Zika infection and its dose-dependence verifies the low epidemic capacity of Aedes albopictus. PLoS Pathog 16( 12 ): e1009068.
https://doi.org/10.1371/journal.ppat.1009068

Financing: This research study was moneyed by the Instructions Générale de l’Armement (https://www.defense.gouv.fr/dga, grant no PDH-2-NRBC-2-B-2113, SB) and the Instructions Centrale du Service de Santé des Armées (https://www.defense.gouv.fr/sante, grant arrangement 2016RC10, SB) and was supported by the European Infection Archive goes Worldwide (EVAg, https://www.european-virus-archive.com) task that has actually gotten financing from the European Union’s Horizon 2020 research study and development program under grant arrangement No 653316. The contents of this publication are the sole obligation of the authors.

SL was moneyed by a postdoctoral grant of the Fonds Wetenschappelijk Onderzoek – Vlaanderen (FWO, https://www.fwo.be). The funders had no function in research study style, information collection and analysis, choice to release, or preparation of the manuscript

Completing interests: The authors have actually stated that no completing interests exist. .

Disclaimer: AAAS and EurekAlert! are not accountable for the precision of press release published to EurekAlert! by contributing organizations or for making use of any info through the EurekAlert system.



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