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4 Thursday, May 16, 2019 20:43

Here’s What Could Happen If You Get Measles While Pregnant

The measles can be dangerous for people of all ages, but the highly contagious virus poses a particular threat to pregnant women.That threat was clearly illustrated in a recent case report, which detailed the case of a 27-year-old woman in England — who had not been vaccinated — who got measles during her third trimester and ended up needing an emergency cesarean section to save her baby.

When the woman was initially hospitalized, it wasn't clear that she had measles, according to the case report, published May 9 in the journal BMJ Case Reports. In fact, it took doctors nearly 2 weeks to make the proper diagnosis. [27 Devastating Infectious Diseases]Within a day of being hospitalized, the woman began having severe breathing problems.

Problems that arise from any respiratory infection are more severe in pregnant women, because the immune system is in a naturally suppressed state, said lead case report author Dr. Jassimran Bansal, an obstetrics and gynecology resident at King's College Hospital in London. But the woman's breathing problems didn't improve; they worsened over the next five days, and her lungs showed signs of severe respiratory failure.

Because both the woman and her baby’s health were at risk from her illness, the woman's doctors recommended she have an emergency C-section, where she delivered a healthy, but premature baby.Measles during pregnancyMeasles can be difficult to diagnose during pregnancy, because the infection's telltale rash is often absent, said Bansal, who was involved with the woman's treatment.

It's not clear why the characteristic rash — which shows up as distinctive large red spots that typically spread from the face to the neck, trunk, arms, legs and feet — may be absent, but it's likely due to changes in the immune system that occur during pregnancy, she said.In fact, the woman did have a mild rash when she went to the hospital during her 32nd week of pregnancy.

She told doctors that she also had a sore throat and fever. The rash, which was itchy with red bumps, had first appeared on the palms of her hands and then spread to her face, according to the report. But simply having a rash doesn't mean a person has the measles; other viruses can also cause rashes, Bansal said.

When the woman was admitted to the hospital, doctors initially suspected she may have had a nonspecific viral respiratory infection, like the flu, Bansal told Live Science. Measles was lower down on the list of possible diagnoses, because the woman didn't have the typical rash, and because measles in pregnancy is still very rare in England, she noted.

As her illness worsened, however, doctors noted that her rash did spread to her chest, back and stomach, a pattern that is more typical of measles, according to the report.Making the diagnosisAs the woman recovered from both her C-section and the illness, test results suggested that her breathing problems were due to pneumonia caused.

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