Updated 5:50 p.m. ET

Two major college conferences — the Big Ten and Pac-12 — each announced Tuesday they were sidelining college football and other fall sports because of the coronavirus, just weeks before schools were scheduled to play their first games.

The Big Ten, which includes universities with powerhouse sports programs, such as Ohio State, Michigan, Nebraska, Wisconsin, Penn State and Michigan State, said it will look at holding some competitions in the spring.

It's a familiar moment. The kids want their cereal and the coffee's brewing, but you're out of milk. No problem, you think — the corner store is just a couple of minutes away. But if you have COVID-19 or have been exposed to the coronavirus, you're supposed to stay put. Even that quick errand could make you the reason someone else gets infected.

President Vladimir Putin announced Tuesday that Russia has become the first country to approve a vaccine to prevent coronavirus infection, saying one of his daughters has already received a dose of the new prophylaxis even though that it is still under development.

The announcement of the new vaccine, dubbed Sputnik-V, has been met with initial skepticism, as it has yet to complete Phase III trials in which large numbers of people are given doses to determine whether it is safe and effective in a general population.

Updated at 11:28 p.m. ET

A shooting outside the White House on Monday briefly overtook President Trump's daily news conference, leading Secret Service to call the president away from the briefing room lectern.

Later the Secret Service said a uniformed Secret Service officer had shot a 51-year-old man who said he had a gun and pointed an object at the officer, crouching in "a shooter's stance." The officer fired his weapon, striking the man in the torso.