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National Center for Immunization and Respiratory Diseases Director Dr. Nancy Messonnier, speaks during a news conference in January. Messonnier on Friday defended the CDC's handling of a new coronavirus case in California. Samuel Corum/Getty Images hide caption

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Samuel Corum/Getty Images

The most common test for coronavirus infections checks for the virus' genetic material. A blood test that, instead, measures antibodies against the virus could give doctors and researchers more information. Jane Barlow /WPA Pool/Getty Images hide caption

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Jane Barlow /WPA Pool/Getty Images

How A Coronavirus Blood Test Could Solve Some Medical Mysteries

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Health officials have identified what could be the first U.S. case of the novel coronavirus spreading within the general population. But a hospital says the diagnosis was delayed for days. Here, a passenger wears a face mask on a train in San Francisco on Wednesday. David Paul Morris/Bloomberg via Getty Images hide caption

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David Paul Morris/Bloomberg via Getty Images

The Centers for Disease Control and Prevention, headquartered in Atlanta, announced on Wednesday a new case of the COVID-19 disease in California, a diagnosis that was delayed because testing wasn't done immediately. Jessica McGowan/Getty Images hide caption

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Jessica McGowan/Getty Images

Most efforts to develop a universal flu vaccine have focused on the lollipop-shaped hemagglutinin protein (pink in this illustration of a flu virus). Kateryna Kon/Science Photo Library/Getty Images hide caption

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Kateryna Kon/Science Photo Library/Getty Images

The new coronavirus has yet to sicken American health workers, as it has in China. But deaths of hospital workers in Asia have heightened scrutiny of the U.S. health care system's ability to protect people on the front line. Thomas Northcut/Getty Images hide caption

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Thomas Northcut/Getty Images

As U.S. Preps For Coronavirus, Health Workers Question Safety Measures

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Hartford is home to the Connecticut State Capitol and state legislature — as well as to major U.S. insurance firms. In 2019, those insurers spent what it took to defeat Connecticut's version of a "public option" in health care, despite strong support among the state's lawmakers. Jessica Hill/AP hide caption

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Jessica Hill/AP

A woman wears a mask in New York out of concern for the newly emerged coronavirus. However, experts say that the commonly worn surgical masks aren't very effective protection. Mark Lennihan/AP hide caption

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Mark Lennihan/AP

Health Officials Warn Americans To Plan For The Spread Of Coronavirus In U.S.

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A drug implant was prescribed for an active 8-year-old girl diagnosed with central precocious puberty. The price of one option was thousands of dollars less than the other. Kristina Barker for KHN hide caption

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Kristina Barker for KHN

Hormone Blocker Sticker Shock: Kids Drug Costs 8 Times More Than One For Adults

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Sarah Ziegenhorn and Andy Beeler shared a selfie while hiking in Texas' Big Bend National Park in December 2018. Beeler died of an opioid overdose last March. Ziegenhorn traces his death to the many obstacles to medical care that Beeler experienced while on parole. Sarah Ziegenhorn hide caption

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Sarah Ziegenhorn

They Fell In Love Helping Drug Users. But Fear Kept Him From Helping Himself

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Daniel Wethli got a warm welcome from his mom and dad at the Pittsburgh airport last week after clearing two weeks of quarantine in Southern California. He was studying in Wuhan when the novel coronavirus shut the city down, but never showed any signs of infection. Daniel Wethli hide caption

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Daniel Wethli

Evacuated For COVID-19 Scare, Pennsylvania Man Reflects On Life After Quarantine

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