The Maine Board of Licensure in Medicine also decided to oversee a deeper investigation into Meryl Nass, an internist from Ellsworth.

Nass has been outspoken in recent years with her criticism of the U.S. response to the COVID-19 pandemic. She describes herself in her Twitter bio as "Physician, writer, investigator. First person to investigate an epidemic and prove it was not a natural event. I untangle disinformation. Join me in resisting."

She is active with Children's Health Defense, a group that questions vaccines, vaccine mandates and "misinformation." In a November letter published on the group's site, Nass objected to the Maine Board of Licensure and Medicine's threats of disciplinary action against physicians who spread vaccine misinformation and disinformation.

She also argued against relying on vaccines in the letter, and accused the government of quelling the use of hydroxychloroquine and ivermectin, neither of which have been approved by government agencies for the treatment of COVID-19 in humans.

"Ivermectin is approved for human use to treat infections caused by some parasitic worms and head lice and skin conditions like rosacea," the Food and Drug Administration wrote on its website. "Currently available data do not show ivermectin is effective against COVID-19."

But she stated that both drugs "were approved, adequate and available — and cheap. Thus they had to be suppressed."

She also runs a blog titled "Anthrax Vaccine."

Unless Nass agrees to transition to inactive status, her license will be suspended for 30 days, Maine Public reported. She is also required to undergo a psychological examination per the board's request.

Doctor Suspended for COVID Misinformation
A Maine medical board voted Tuesday to suspend the license of a doctor after receiving complaints that she had been spreading misinformation about COVID-19. A healthcare worker prepares a syringe with a vial of the J&J COVID-19 vaccine at a temporary vaccination site at Grand Central Terminal train station on May 12, 202 in New York City.ANGELA WEISS/AFP VIA GETTY IMAGES

Nass did not return a phone call seeking comment on Wednesday.

The medical board has received at least two complaints that Nass was spreading misinformation about the virus. Nass has practiced medicine for decades and in recent years has been increasingly critical about the safety and effectiveness of vaccines, including ones for COVID-19.

Nass wrote in a blog post recently that her lawyer predicted she would lose her licenses during the medical board's meeting, Maine Public reported.

She has also blogged that COVID-19 vaccines are associated with reproductive harm. No recognized medical body has substantiated that claim, which is oft-repeated in anti-vaccine circles. Nass has also described the U.S. Centers for Disease Control and Prevention as a "criminal agency."

The Associated Press contributed to this report.

Even The Hill ran a similar piece.