Axios

Tech companies are cooperating with federal officials to crack down on illegal opioids being sold on the internet. But that doesn't mean congressional action on the issue is out of the question.

What we're watching: Silicon Valley is trying to defuse tensions with the Food and Drug Administration, and FDA Commissioner Scott Gottlieb's comments that tech is cooperating show their efforts may be working. But some lawmakers say they’re open to regulation for the platforms if the problem persists.

More than 41,000 people in Europe were infected with measles during the first half of 2018, according to the WHO, smashing 12-month totals for any year since 2010.

Why it matters: Measles is a preventable disease with a highly effective vaccine, but medically unfounded skepticism about the vaccine's link to autism have reduced vaccination rates below the effective threshold to protect many communities.