"As a doctor, I see a lot of very distressed people coming into my office," he said. "The way the government and politicians talk about the virus is making people anxious and that's a big problem."
Spencer Stone arrived in Paris, France, on Wednesday but was hospitalised upon arrival. He has now returned to the US, his lawyer confirmed on Sunday.
The lights are set to stay until January 6, but far fewer people will be there to enjoy them this year.
Journalists and rights organisations have criticised the new law, arguing that it shields French police from scrutiny.
The French region of Auvergne Rhône-Alpes has ordered 2 million tests and will make 1,000 testing sites available.
A French broadcaster said in a statement that a "technical problem" led to the erroneous publications.
The shoe - which belonged to the Queen beheaded in 1793 - sold for four times more than was expected.