Jha told CNBC's "The News with Shepard Smith," that the infection rate could be worse if it were winter, and predicted the delta spike could peak within two months. ?
"It might peak in September, but we are far away from the peak, right now we are doing 40,000 cases a day, it's going to go substantially higher before it peaks," Jha said. .
The delta variant has spread rapidly through the U.S., accounting for more than 83% of sequenced cases in the U.S