Zika virus can also be transmitted via anal sex
On Thursday, 14, the American Center for Disease Control (CDC) confirmed the first proven case of Zika virus transmitted through anal sex. The episode occurred in the United States when a man who spent a week in Venezuela and contracted the virus transmitted it to his partner, who did not leave Dallas, Texas.
In countries where Aedes aegypti mosquito infestation - transmitter of dengue, Zika virus and chikungunya fever - is not relevant, as the US, transmission via sexual is considered the most disturbing form of contagion by the Zika virus.
According to the CDC, it is proven that the Zika virus can be transmitted via anal and vaginal sex as it is passed through the semen of the infected person. It is also known that the virus can remain active longer in semen than in blood. In January 2016, two days after returning to Texas after a one - week visit to Venezuela, the man - identified only as Patient A - had low fever, red patches on the body and conjunctivitis that lasted for three days. One day before and one day after presenting symptoms, Patient A had unprotected anal intercourse with his partner, Patient B. After seven days, patient B had the same symptoms, in addition to headache, pain in body and lethargy. Patients A and B have been monogamous for more than ten years and had no genital or anal lesions.
Patient A reported that in the region that was in Venezuela, many people were showing symptoms and were diagnosed with Zika virus. Both patients had serological samples collected and analyzed, proving the infection by Zika and, since patient B was not in any risk area, the researchers concluded that the transmission was through anal sex with their partner. Venezuela has autochthonous transmission of the virus confirmed since November 2015.
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