Anthony Fauci warned a Senate committee on Tuesday that states are "skipping over" coronavirus reopening guidelines — and that many of the new infections from young people could be potentially deadly to others.

The big picture: More than 50% of the new infections in the U.S. are from states like Florida, Texas, California and Arizona that have hot spots. Fauci forewarned the consequences of reopening too soon during his previous congressional testimony last month.

  • Yes, but: Fauci noted that states and localities that "did it right" regarding reopening still had individuals who engaged in an "all or none phenomenon" — disregarding social-distancing measures and face mask usage while out socially.

What he's saying: "I think we need to emphasize the responsibility that we have both as individuals and as part of a societal effort to end the epidemic that we all have to play a part in that."

  • "We've got to get that message out that we're all in this together, and if we're going to contain this, we've got to contain it together," Fauci added.

Go deeper: New York to require travelers from 16 states to quarantine

Go deeper

Updated 23 hours ago - Health

The states where face coverings are mandatory

Data: Compiled by Axios; Map: Danielle Alberti/Axios

Mississippi Gov. Tate Reeves issued a statewide mask mandate on Tuesday for those in public, as well as for teachers and students going back to school.

The big picture: 34 states, in addition to the District of Columbia, have issued some form of mask mandate as infections surge across the country.

Poll: 59% of Americans support nationwide 2-week stay-at-home order

People lay out on the grass while maintaining social distancing guidelines in Williamsburg, Brooklyn. Photo: Rob Kim/Getty Images

Over half of Americans surveyed in a new NPR/Ipsos poll support a mandatory, nationwide order to shelter at home for two weeks to slow the spread of the coronavirus.

Why it matters: COVID-19 deaths and hospitalizations are rising across the U.S., which saw dramatic surges in new infections this summer. More than 155,000 Americans have died, per Johns Hopkins.

23 hours ago - Health

Local governments go to war over schools

A protester during a demonstration in NYC. Photo: Ron Adar/SOPA Images/LightRocket via Getty Images

The next big coronavirus battleground will be over who has the final say on whether schools can stay open.

Why it matters: This involves the safety of young children and their parents, not to mention older educators and staff, and comes at the same time as many of the parents are out of work.