Infectious disease experts warn the next pandemic could be deadlier. Doctors are bracing for the next flu season, which could see a surge in "co-infections." Ahead of the virtual semester, millions of parents are forced to quit their jobs to watch kids at home. College students are getting ready to head back to some of their campuses early so they can quarantine. And a group of PAC-12 football players have organized a campaign that demands safety steps, and they're threatening to sit it out the season. 

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