Child and teen health

Sirlen Costa, of Brazil, holds her son Samuel, 5, as her niece Danyelle Sales, right, looks on during a news conference, Monday, Aug. 26, 2019, in Boston. Costa brought her son to the United States seeking treatment for his short bowel syndrome. Doctors and immigrant advocates say federal immigration authorities are unfairly ordering foreign born children granted deferred action for medical treatment to return to their countries. (AP Photo/Elise Amendola)

In this Tuesday, April 10, 2018 photo, Marshfield High School Principal Robert Keuther displays vaping devices that were confiscated from students in such places as restrooms or hallways at the school in Marshfield, Mass. Illinois health officials are reporting what could be United States' first death tied to vaping. In a Friday, Aug. 23, 2019, news release, the Illinois Department of Public Health says a person who recently vaped died after being hospitalized with "severe respiratory illness." The agency didn't give any other information about the patient, including a name or where the person lived. (AP Photo/Steven Senne, File)

FILE - In this May 22, 2019, file photo, State Sen. Richard Pan, D-Sacramento, calls on lawmakers to approve his measure to toughen the rules for vaccination exemptions in Sacramento, Calif. An anti-vaccine activist has been cited for assault after pushing Pan on a sidewalk near the Capitol. Kenneth Austin Bennett livestreamed the confrontation on his Facebook page. It shows him shoving Pan in the back after questioning him on vaccinations. The Sacramento Police Department say they cited Bennett on a misdemeanor assault charge then released him. (AP Photo/Rich Pedroncelli, File)

Britain's Prime Minister Boris Johnson talks to hospital patient Scarlett Gibbons, 5, during a visit to the Royal Cornwall Hospital in Truro, south-west England, Monday Aug. 19, 2019. Johnson is under increasing pressure Monday to recall Parliament after leaked government documents warned of widespread problems if the U.K. leaves the European Union without a Brexit withdrawal agreement. (Peter Nicholls/Pool via AP)

This undated photo released by The Lucie Blackman Trust/Family shows Nora Anne Quoirin. Malaysian police said Tuesday, Aug. 14, 2019, the family of the missing 15-year-old London girl positively identified a naked body found near the nature resort in southern Negeri Sembilan state, Malaysia, where she disappeared over a week ago. (The Lucie Blackman Trust/Family via AP)

An Albany County probation official on Monday, Aug. 5, 2019, holds up a tablet used to conduct the e-Connect program, at the Albany County Probation Department office. The project screens young offenders for risk of suicide as a way to connect them with mental health services. (AP Photo/Ryan Terinelli)

In this Wednesday, July 24, 2019 photo, Mohammad, 6, who is affected by a rare disorder called xeroderma pigmentosum, or XP, waits with his mother inside a hospital in Casablanca, Morocco. The rare genetic disorder can make the suns rays and other sources of ultraviolet light extremely damaging to the skin and eyes _ and is more common in North Africa than much of the world. (AP Photo/Mosa'ab Elshamy)