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Evidence of Spreading Zika Virus Infection Caused by Males of Different Species

Journal

VIRUSES-BASEL
Volume 14, Issue 9, Pages -

Publisher

MDPI
DOI: 10.3390/v14092047

Keywords

Zika virus; reproductive tract; males; Aedes aegypti

Categories

Funding

  1. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
  2. Instituto Nacional de Ciencia e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
  3. Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ) [Edital: E-18/2015, 221797]

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Zika virus, mainly transmitted by Aedes mosquitoes, has significant health impacts and can also be sexually transmitted and persist in the male reproductive tract. It can be transmitted through mosquito reproductive systems and eggs, which may serve as reservoirs. Understanding the spread of Zika virus from the reproductive tract is crucial for research and prevention.
Zika virus (ZIKV) is a positive-sense single-stranded RNA flavivirus and is mainly transmitted by Aedes mosquitoes. This arbovirus has had a significant impact on health in recent years by causing malformations, such as microcephaly in babies and Guillain-Barre syndrome in adults. Some evidence indicates that ZIKV can be sexually transmitted and may persist in the male reproductive tract for an extended period in humans. Knockout and vasectomized mice have been used as models to reveal ZIKV infection in the male reproductive tract as a virus source. ZIKV presence in male and female mosquito reproductive tracts and eggs point to venereal and vertical/transovarian transmission, again demonstrating that the reproductive tract can be involved in the spread of ZIKV. Moreover, eggs protected by eggshells have the potential to be a ZIKV reservoir. Given the +-lack of vaccines and therapies for Zika fever and the underestimated prevalence rate, an understanding of ZIKV infection and its spread from the reproductive tract, which is protected from the immune system and potentially active for virus transmission, is imperative. We must also develop cheaper, more efficient techniques for virological surveillance inside vectors and humans, control vectors with ecofriendly insecticides, and promote condom use to avoid ZIKV contamination during sexual intercourse, as recommended by the World Health Organization.

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