"We don’t want the world to lose confidence in vaccines that are currently available,” said Dr. Kanta Subbarao, a virologist who chairs that WHO committee.

"There is no magic bullet," HHS Secretary Xavier Becerra said at a news conference.

Expect more contract disputes as labor and supply costs rise for providers, and payers look to curb premiums.

Justice Stephen Breyer wrote for the court that prosecutors must prove that doctors knew they were illegally prescribing powerful pain drugs in violation of the federal Controlled Substances Act.