Former President Donald Trump has dismissed claims that COVID-19 vaccines are broadly unsafe while asserting that his own role in the development of the vaccines may have saved 100 million lives.

Trump touted the effectiveness of Operation Warp Speed, his administration’s program to accelerate the development of COVID-19 vaccines and therapeutics, during a Monday interview on the conservative podcast The Water Cooler.

Host David Brody asked the former president if he would “acknowledge” that the vaccines “were not as safe or effective as we were told by the medical community at the time,” after repeating a number of unsubstantiated anti-vaccine claims.

“I was able to get something approved that, you know, that has proven to have saved a lot of lives,” Trump said, ignoring Brody’s request to weigh in on the anti-vaccine narrative. “Some people say that I saved 100 million lives worldwide.”