A Massachusetts lawsuit has claimed Juul bought ads on websites for children and teens. The lawsuit said Juul ads appeared on websites like Nickelodeon, Cartoon Network and Seventeen magazine. The case said Juul targeted youth during its launch period, between 2015 and 2016, though the company has since ended much of its advertising. (New York Times)

The surge in coronavirus cases reflects a backlog of cases, not a sudden spread of the virus, the World Health Organization said. Officials say the overnight spike of about 15,000 cases was due to a change in how doctors tested for the illness and a broadened definition of the infection. (Reuters)

Some U.S. test kits for the coronavirus are not working as expected. The kits were distributed to states this week by the Centers for Disease Control and Prevention. The CDC is remaking parts of the kit after some produced inconclusive results. (CNN)

U.S. officials have reported a 15th case of coronavirus. The patient is a recent evacuee from China and is quarantined at a Texas military base. Two more cases were also reported this week from other evacuees from China. (Associated Press)

Eisai will withdraw its weight-loss drug from the market. The Food and Drug Administration was concerned about a higher occurrence of cancer in people who took the drug Belviq. The concerns came from a study that began after Belviq was approved. (STAT)