Don’t drop the masks yet. One coronavirus variant is ‘increasing exponentially’ as the US races to vaccinate
Some Americans are ditching personal responsibility and forgoing masks, even though the highly contagious B.1.1.7 variant has spread to at least 46 states and Washington, DC. "That strain is increasing exponentially. It's spiking up," said Dr. Celine Gounder, an infectious diseases specialist and epidemiologist. "So we are probably right now on a tipping point of another surge."