"I hope everyone remembers when they’re getting the COVID-19 (often referred to as the China Virus) Vaccine, that if I wasn’t President, you wouldn’t be getting that beautiful 'shot' for 5 years, at best, and probably wouldn’t be getting it at all," read a statement from the former president. "I hope everyone remembers!"
Trump's Wednesday comments came after an event earlier in the day when President Biden announced he would order 100 million doses of the COVID-19 vaccine from Johnson & Johnson (J&J). Following a meeting with CEO's from J&J and Merck, Biden celebrated their partnership to produce the former's vaccine.
Biden went on to praise his own administration's efforts on the issue, saying that the U.S. is "now on track to have enough vaccine supply for every American adult by the end of May -- months earlier than anyone expected."
Under Trump, the White House pursued "Operation Warp Speed," which National Institutes of Health Director Francis Collins said was "incredibly important."
"The fact that we in December have not one, but two vaccines that had gone through trials and had been judged safe and effective by a very rigorous and very public FDA process is just breathtaking," he told Axios on HBO.
"My predecessor - as my mother would say, God loves him - failed to order enough vaccines," Biden said on Friday, repeating criticism he's repeatedly made of his predecessor. "Failed to mobilise the effort to administer the shots. Failed to set up vaccine centres." In remarks delivered at the facility, Biden sought to reassure the public that the shots are safe and described efforts by his administration to increase supplies and vaccination sites.
He also sought to rally support for his US$1.9 trillion (S$2.5 trillion) economic stimulus plan that he proposed in response to the pandemic.
The plant, in Portage, just outside Kalamazoo in south-west Michigan, is Pfizer's largest manufacturing facility. There, the company's coronavirus vaccine is formulated and filled into vials before being shipped for distribution.
Biden's visit was just his second trip away from the East Coast since taking office last month, following a Tuesday appearance in Milwaukee, Wisconsin, at a CNN town hall.
Last week, he toured the National Institutes of Health in Maryland, getting a first-hand look at federal research on the virus.
Since taking office, Biden has ordered an additional 100 million doses of Pfizer's vaccine, bringing the total to 300 million, which is enough for 150 million people. The Pfizer and Moderna vaccines each require two doses.
The president announced on Tuesday that Pfizer had agreed to speed up shipments after Biden invoked the Defence Production Act, which enables the government to nationalise manufacturing in emergencies.