The Marin County, Calif. outbreak, detailed in a new CDC report, underscores the risks for unvaccinated children under 12 as delta rampages across the country.
It marked the first in a series of decisions that could imperil products sold by Juul and hundreds of other e-cigarette, hookah, cigar and pipe manufacturers.
The 121 cases among five states almost certainly represent an undercount because the rally concluded less than two weeks ago and contact tracing is challenging in connection with an event that lures attendees nationwide.
The administration’s classified review, with portions set to be publicly released as soon as this week, doesn’t rule out that the virus emerged in the wild or that it leaked from a laboratory, officials said.