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WASHINGTON, DC - SEPTEMBER 29: Dr. Tom Frieden, director of the Centers for Disease Control and Prevention, delivers remarks during a press conference September 29, 2016 in Washington, DC. Frieden took part in the news conference to highlight that millions of people get sick, hundreds of thousands are hospitalized and thousands to tens of thousands of people die from flu and related complications every year. (Photo by Win McNamee/Getty Images)
CDC To Hold Public Session On How To Deal With A Nuclear Blast—And We're Not Okay

There's been some unexpected fallout since President Donald Trump bragged about the size and efficacy of his “Nuclear Button.” To whit: The Centers for Disease Control and Prevention said its briefing, which is scheduled for the afternoon of January 16, will address “planning and preparation efforts” for a nuclear attack.

Wait, what? Let's back up. Here's the tweet that started it:

Trump's tweet was plenty to make people nervous and angry:

Then came news of the CDC’s Public Health Grand Rounds session, titled “Public Health Response to a Nuclear Detonation.”

The announcement includes this terrifying passage:

While a nuclear detonation is unlikely, it would have devastating results and there would be limited time to take critical protection steps. Despite the fear surrounding such an event, planning and preparation can lessen deaths and illness.  For instance, most people don’t realize that sheltering in place for at least 24 hours is crucial to saving lives and reducing exposure to radiation. While federal, state, and local agencies will lead the immediate response efforts, public health will play a key role in responding.

Twitter users had a minor meltdown but kept their sense of humor:

This whole nuclear war scenario is starting to feel a lot less implausible than we'd all like.

H/T: HuffPost, CDC