Pence aide Katie Miller, who had coronavirus, is back at work - and pregnant

WASHINGTON – A top aide to Vice President Mike Pence who tested positive for coronavirus earlier this month has returned to work.

Press secretary Katie Miller also announced that she is pregnant.

"Back at work today after three NEGATIVE COVID tests," Miller tweeted. "Thank you to all my amazing doctors and everyone who reached out with support. I couldn’t have done it without my amazing husband who took great care of his pregnant wife."

Miller is married to Stephen Miller, a senior adviser to President Donald Trump.

Miller had tested positive for COVID-19 on May 8, shortly before Pence traveled to Iowa to promote efforts to reopen the economy. She was the second person who works at the White House complex who tested positive for the virus that week.

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Pence kept apart from Trump for a period afterward as a precaution. White House aides are now tested daily for the novel coronavirus.

Miller did not say how ill she was. She had tweeted May 8 that she was doing well but did not say anything more about her health until Tuesday's announcement.

Katie and Stephen Miller got married in February at Trump International Hotel in Washington, D.C.

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Available information suggests no serious increased risk to pregnant women or their unborn babies from the novel coronavirus. But because the virus that causes the disease is new, it's too early to say for sure.

A study published in February in the British medical journal Lancet on nine pregnant women in China with pneumonia-related to COVID-19 found no evidence of infection transferred to their babies.

The American College of Obstetrics and Gynecology said in an advisory to medical offices that pregnant women had a higher risk of death from past viral epidemics than has been seen in the current outbreak. The Lancet study and Centers for Disease Control and Prevention say there is a lack of published data showing an increased risk with coronavirus.

According to the Lancet study and the CDC, pregnant women are particularly susceptible to respiratory bacteria and severe pneumonia because their immune systems are suppressed and experience physiological changes such as needing more oxygen.

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Contributing; Jayne O'Donnell, USA TODAY.

This article originally appeared on USA TODAY: Coronavirus: Pence aide Katie Miller back at White House and pregnant