“The success of the vaccine will save millions of lives over the longterm, I believe in our incredible doctors, nurses medical professionals and scientists,” said Ms Trump at the event in suburban Philadelphia, Pennsylvania.
“Our administration remains 100 per cent supportive to ensure our nation is equipped with all all the medical supplies it needs and getting a vaccine developed and distributed as safely and quickly as possible.
“This is something that both political parties should support encourage and celebrate. No-one should be promoting fear of solutions for purely political ends.”
During the speech Ms Trump also spoke about catching the virus herself.
“Thank you for all the love and support you gave us when our family was diagnosed with Covid-19 we are all feeling so much better now,” she said.
“Since earlier this year our country has felt the effects of the global pandemic and I have felt the effects of Covid-19 as a patient and as a worried mother and wife.
“We all know the American spirit is stronger than this virus, we have proven that we can and will overcome this unexpected challenge."
The president had to spend three days in hospital after catching the virus, while Ms Trump recuperated at the White House with son Barron.
She later credited her recovery to a “balanced diet, fresh air, and vitamins."
The first lady wrote in an essay that she had preferred “a more natural route” to recovery rather than the cocktail of drugs taken by the president during his treatment for Covid-19.