The Axios portal writes about this with reference to Trump's adviser.

The adviser did not specify which manufacturer's vaccine Trump and his wife were vaccinated with.

At the time of his departure from the presidency on January 20, two vaccines were approved in the United States: from Moderna and Pfizer.

Trump fell ill with COVID-19 in October 2020 and declared that he was immune to the disease. 

In January, Trump called the number of coronavirus cases in the United States "grossly exaggerated".