The ER nurse, still wearing her blue scrubs as she sits in her auto, said the flu "is spreading like wildfire".
The nurse even gave a sarcastic demonstration of how to properly keep from spreading germs when sneezing and coughing - since so many apparently have a hard time grasping the concept.
Lockler goes on to give other tips to people when it comes to visiting the emergency room during the height of flu season. She posted an awesome video on Facebook regarding the flu and how it is spread along with great tips on home treatment.
The video garnered more than 4 million views on Facebook at the time of publishing this story.
"The biggest problem for me was seeing people come in to visit and not only being exposed to this terrible flu virus, but not taking the correct precautions to get themselves disinfected before going out in the world", Lockler said. "It's great", she said sarcastically.
"And wash your stinking hands so you don't make your babies sick!"
"Please don't bring your healthy children, especially your newborn babies, into the emergency room", Lockler is heard saying in the video, which has been shared more than 90,000 times since Saturday. "If you don't have a true emergency, this would not be the time to come to the emergency room", she says.
Lockler's tone is sarcastic - she demonstrates the elbow sneezing in "slow motion" at one point - while still being informative about preventing the spread of flu.
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"If a team member of a softball team is sick or injured, you do not bring the entire softball team in to check on them because guess what?" "Watch this - I'm going to teach you all a magic trick".
Yet many others on Facebook are grateful.
In the seven-minute video, Lockler also provides her audience with some ideas of how you can treat yourself at home.
The media's come calling, too, on the frustrated, but endearingly motherly Lockler. In a briefing Friday, the Centers for Disease Control and Prevention said the flu outbreak is responsible for a total of at least 53 child deaths so far this season.
Lockler said a major issue has been patients going into the emergency room for something they could've gone to a clinic for.
She said: "There's a lack of understanding and a lack of interest in knowing what to do to protect themselves sometimes".
In the interview, she concedes her tone could come across as sarcastic or condescending but says she didn't mean it that way. "It's the first time I've been offered these when I walked in an ER". "Please thank an ER nurse - and every nurse and doctor [who] is taking care of sick people right now", she said. "We're putting ourselves in the thick of some nasty germs to help".