Is Zika Dangerous In Your Second Trimester? It's A Definite Concern

Despite cooling temperatures in some areas around the States, the Zika virus continues to be a concern for many. For pregnant women and couples looking to start a family, Zika's known links to severe birth defects have made many people concerned about mosquito bites – particularly in areas where the virus is prevalent. But is Zika dangerous in your second trimester? Studies have suggested that an infection with the Zika virus can have negative effects for unborn babies at all stages of pregnancy.

Back in March, NBC News cited a study in the New England Journal of Medicine, which provided information from lab reports revealing that a Zika virus infection during pregnancy is "associated with grave outcomes."

"Despite mild clinical symptoms, Zika virus infection during pregnancy appears to be associated with grave outcomes, including fetal death, placental insufficiency, fetal growth restriction and central nervous system injury," the study read.

What's more, Dr. Karin Nielsen, professor of clinical pediatrics at the University of California Los Angeles, told NBC News that the virus affected fetuses at varying stages of gestation:

We saw problems with the fetus or the pregnancy at eight weeks, 22 weeks, 25 weeks, and we saw problems at 35 weeks... Even if the fetus isn't affected the virus appears to damage the placenta, which can lead to fetal death.
Angel Valentin/Getty Images News/Getty Images
CAROLINA, PUERTO RICO - SEPTEMBER 2: Coraliz Dones, 34 and 9 months pregnant, who tested positive for Zika when she was 7 months pregnant, visits with midwife Michelle Perez-Chiques at the Centro MAM, an independent natural birth clinic which promotes natural births and uses midwifes on September 2, 2016 in Carolina, Puerto Rico. The Centres for Disease Control and Prevention has estimated that 25% of the Puerto Rico's population could have the Zika Virus by the end of mosquito season, and that up to 50 pregnant women each day are infected on the island. A recent study projected as many as 270 babies could be born with the debilitating birth defect microcephaly, between now and mid-2017. In a normal year, doctors expect to see just 16 such cases. (Photo by Angel Valentin/Getty Images)

This is certainly concerning for pregnant women – especially considering, as an article in The Atlantic noted, other viruses that attack the fetus like, rubella, are primarily and particularly dangerous in a pregnant women's first trimester.

The Zika virus, which can also be sexually transmitted, swept through the Americas in early 2015. Certain areas throughout the United States have been reported to have travel-associated cases of the virus, and areas in Florida, like Miami and the Tampa Bay area, have had reports of locally acquired mosquito-borne transmissions of the Zika virus.

In April, the Centers for Disease Control & Prevention concluded that Zika caused microcephaly, and other severe birth defects:

Scientists at the Centers for Disease Control and Prevention (CDC) have concluded, after careful review of existing evidence, that Zika virus is a cause of microcephaly and other severe fetal brain defects.
A workers of the Health Secretariat hands mosquito nets to pregnant women on February 17, 2016, in Cali, Colombia. Cali's Health Secretariat massively delivered mosquito nets to pregnant women and installed guppy fish bowls as a preventive measure against Aedes aegypti mosquito, vector of Zika, Dengue, and Chikungunya. Colombia registers 31,555 people infected with zika virus, of which 5,013 are pregnant women, reported the National Institute of Health (NIH). AFP PHOTO / LUIS ROBAYO / AFP / LUIS ROBAYO (Photo credit should read LUIS ROBAYO/AFP/Getty Images)

The CDC defines microcephaly as a birth defect in which a baby's head is smaller than expected. In some cases, microcephaly occurs because a baby's brain didn't develop properly during pregnancy, the CDC noted.

It's understandable why pregnant women or women expecting to be pregnant would be concerned about contracting Zika. The CDC lists best Zika virus prevention tips on its website, so whatever stage of your pregnancy you may find yourself, make the extra effort to read up, educate yourself, and stay safe.