Former President Barack Obama weighed in on the coronavirus outbreak, saying it was not an overreaction for the NBA to suspend its season and for the March Madness tournament to be canceled.

“If you’re wondering whether it’s an overreaction to cancel large gatherings and public events (and I love basketball), here’s a useful primer as to why these measures can slow the spread of the virus and save lives. We have to look out for each other,” the former president said Thursday in a tweet.