A Florida nurse's Facebook rant about the "cesspool of funky flu" in emergency room waiting areas is getting a lot of attention.

In a six-minute video which has been viewed 4.8 million times, Katherine Lockler says: "Wash your stinking hands."

Ms Lockler told the Pensacola News Journal she recorded the video after a 12-hour shift because she's concerned people are not taking the proper precautions during a nasty flu season.

She sarcastically offers a "magic trick" for staying well, showing views how to sneeze into your arm.

She also scolds a softball coach for bringing an entire team to visit one player at the ER. "You just got maybe 15 new vectors, or carriers of the flu, by them just walking in."

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