Stanford University has cleared Stephen Quake, a bioengineering professor, of any wrongdoing in his interactions with a Chinese researcher who roiled the scientific world by creating the first gene-edited babies.

New York City health officials issued summonses to parents of three children Thursday for failing to have their children vaccinated against measles, a violation of the city’s emergency ordermandating immunizations to control a surging outbreak.

The Food and Drug Administration promised yesterday to heighten oversight of providers of experimental stem cell treatments, as a Post report detailed the agency’s slow response to a leading stem cell company whose treatments blinded some patients.

A mumps outbreak that began at Philadelphia’s Temple University in February has snowballed, with the city’s health department now reporting 106 cases associated with the flare-up.

University officials say the vast majority of students involved had been immunized previously with the MMR vaccine, which protects against measles, mumps and rubella.

So why are so many still appearing on campus with the mumps’ signature swollen cheeks?

A county in New York has banned unvaccinated children from all public spaces as the state battles its largest measles outbreak in decades.

Officials in Rockland County declared a state of emergency Tuesday, announcing that the ban would begin at midnight and remain in place for 30 days, or until unvaccinated minors receive the measles, mumps and rubella (MMR) vaccine. Officials said unvaccinated minors will not be permitted in public places, such as churches, schools and shopping centers, though outdoor spaces such as playgrounds are not included in the ban.

Dr. Scott Gottlieb became commissioner of the Food and Drug Administration in 2017 with an ambitious plan to reduce cigarette smoking, a habit that kills nearly half a million Americans each year, by shifting smokers to less harmful alternatives like e-cigarettes.

But he was quickly embroiled in an unexpected crisis: the explosion of vaping among millions of middle and high school students, many of whom were getting addicted to nicotine.

Dr. Gottlieb will depart at the end of this month, following his sudden announcement last week that he would resign, with his plans to toughen regulation of both vaping and smoking unfinished and powerful lobbying forces quietly celebrating the exit of a politically canny administrator who aggressively wielded his regulatory powers.

More than 300 health-care experts told the Centers for Disease Control and Prevention Wednesday that the agency’s landmark guidelines for the use of opioids against chronic pain are harming patients who suffer from long-term pain and benefit from the prescription narcotics.

The health-care providers, including three former U.S. drug czars, said the CDC recommendation of a daily numerical threshold for opioid use has led insurers to refuse reimbursement, pharmacies to erect obstacles to obtaining drugs and risks for doctors who want to give out more.