The "Work From Home" singer shared the conspiracy video to her Instagram Stories on Sunday, April 12, 2020, and provided her own caption beneath the footage.
"I've been saying this. Freedom stripping. We'll see what's up when we wake the f**k up," she wrote.
The video was swiftly removed after fans lambasted her stance on the issue, and noted that the Centers for Disease Control and Prevention (CDC) had publicly discredited anti-vaccination theories.
In a lengthy statement on Twitter, the former "The X Factor U.S." contestant apologised for spreading the message, writing, "I'm sorry if anyone was offended by anything in the video I reposted on my story. I am not personally 'anti' anything, I am & will always be pro choice & autonomy."
"I don't believe anything should be enforced upon anyone," the 23-year-old tweeted. "I'm pro do whatever you think is best for you & your fam, personal decisions (between) you, your dr. and partner."
"The point that I agree w/ is that fear mongering & propaganda have us all allowing the stripping of our human rights," she continued, clarifying her apology was "for any misreading of what point I agreed with" in the clip.
"I'm aware that I have a large platform and that it is easy to be misunderstood, so I hope this clears any mess up. Anyway, wishing you love, health and peace goodnight," Lauren concluded.