Child and teen health

FILE - This Feb. 6, 2015, file photo, shows a measles, mumps and rubella vaccine on a countertop at a pediatrics clinic in Greenbrae, Calif. A measles outbreak near Portland has sickened dozens of people in Oregon and Washington, with several more cases suspected, and public health officials scrambling to contain the virus say low vaccination rates are making the situation worse. Clark County Public Health said Sunday, Jan. 28, 2019, that the majority of the cases involve children younger than 10. (AP Photo/Eric Risberg, File)

A sign prohibiting all children under 12 and unvaccinated adults stands at the entrance to PeaceHealth Southwest Medical Center in Vancouver, Wash., Friday, Jan. 25, 2019. Washington Gov. Jay Inslee declared a statewide public health emergency Friday as confirmed measles cases rose to 30, with nine more suspected. (AP Photo/Gillian Flaccus)

FILE - This undated file image provided by the Craven County Sheriff's Office shows an online poster for missing Casey Hathaway. Authorities in North Carolina said Thursday, Jan. 24, 2019, Hathaway, the 3-year-old boy who was missing for two days, has been found alive in good health near the home he disappeared from. (Craven County Sheriff's Office via AP, File)

This photo provided by HCA Healthcare’s Methodist Children’s Hospital shows Justin Timberlake visiting patients at the San Antonio, Texas hospital Friday, Jan. 18, 2019. (Anthony McCartney/HCA Healthcare’s Methodist Children’s Hospital via AP)

A migrant from Honduras pass a child to her father after he jumped the border fence to get into the U.S. side to San Diego, Calif., from Tijuana, Mexico, Thursday, Jan. 3, 2019. Discouraged by the long wait to apply for asylum through official ports of entry, many migrants from recent caravans are choosing to cross the U.S. border wall and hand themselves in to border patrol agents. (AP Photo/Daniel Ochoa de Olza)

This photo provided by the Russian Emergency Situations Ministry taken from tv footage shows Emergency Situations employees carry a saved 10-month old baby at the scene of a collapsed section of an apartment building, in Magnitigorsk, a city of 400,000 about 1,400 kilometers (870 miles) southeast of Moscow, Russia, Tuesday, Jan. 1, 2019. Rescue crews on Tuesday temporarily halted their search through the rubble in the city of Magnitogorsk while workers tried to remove or stabilize sections of the building in danger of collapse. (Russian Ministry for Emergency Situations photo via AP)

FILE - In this Wednesday, June 20, 2018 file photo, President Donald Trump gives the pen he used to sign the executive order to end family separations to Homeland Security Secretary Kirstjen Nielsen, left, during an event in the Oval Office of the White House in Washington. On Saturday, Dec. 29, 2018, the president deflected any blame from his administration for the deaths of two Guatemalan children in December in U.S. government custody as his Homeland Security adviser visited Border Patrol medical officials amid promises of more thorough health screenings for migrant children. (AP Photo/Pablo Martinez Monsivais)

FILE - In this Wednesday, June 20, 2018 file photo, President Donald Trump gives the pen he used to sign the executive order to end family separations to Homeland Security Secretary Kirstjen Nielsen, left, during an event in the Oval Office of the White House in Washington. On Saturday, Dec. 29, 2018, the president deflected any blame from his administration for the deaths of two Guatemalan children in December in U.S. government custody as his Homeland Security adviser visited Border Patrol medical officials amid promises of more thorough health screenings for migrant children. (AP Photo/Pablo Martinez Monsivais)

In this Oct. 9, 2018 photo, an embryologist adjusts a microplate containing embryos that were injected with gene-editing components in a laboratory in Shenzhen in southern China's Guangdong province. Most Americans say it would be OK to change the DNA of babies before they're born to protect them from a variety of diseases _ but a December 2018 poll shows they'd draw the line at gene editing to create children who are smarter, faster or taller. (AP Photo/Mark Schiefelbein)