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Research from several institutions, including the National Primate Research Center in California, suggests that more women than we thought would suffer from an abortion because of the Zika virus, unaware that it was not the case. they are infected
published in the journal Nature Medicine on Monday, revealed that 26% of monkeys infected with zika during the early stages of pregnancy suffer from miscarriage or have stillborn pups, although animals have showed few signs of infection.
– These rates of fetal loss and stillbirth in zika-infected pregnant macaques were about four times higher than those normally observed in unexposed monkey populations at these research centers – said Koen Van Rompay, one of the authors of the study. National Center for Primate Research. Many fetal and placental tissues showed signs of zika virus replication and also had pathological lesions, reinforcing the role of zika in this detrimental outcome.
Previous zika research measured only the number of spontaneous abortions and stillbirths in women who had signs or symptoms of the virus. A recent study of pregnant women infected with Zika virus showed that 5% of them had no term pregnancy or neonates.
– Studies in humans are limited because they depend on symptomatic infections – said Dawn Dudley author of the study and a scientist in the Department of Pathology and Laboratory Medicine at the University of Wisconsin-Madison in the United States. – Women enroll in studies because they have zika symptoms, but we know that up to half of people with zika have no symptoms. Therefore, pregnancy studies probably do not take into account half of the people who have zika.
MICROCEFALIA AND OTHER PROBLEMS
The Zika virus is widely known to cause the birth of children with a set of brain abnormalities that became known as the syndrome Conbad Zika. This syndrome includes microcephaly – malformation in which the perimeter of the baby's head is smaller than normal – but also other health problems, such as epilepsy and vision difficulties.
The disease caused by this virus in adults humans are much lighter. It may include fever, rash, headache, joint and muscle pain, and red eyes. "Our data on monkeys indicate that more research is needed to enable researchers to develop intervention strategies to protect pregnant women and their fetuses against the Zika virus," said Lark Coffey, an arbovirologist and also author of the study
The timing of infection is considered by scientists as an important predictor of fetal loss. Exposure to the virus during the first trimester of monkey pregnancy has been shown to be most likely to result in fetal death – a finding that accompanies human relationships.
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