US President Donald Trump is no longer a Covid transmission risk to others, the White House physician has said.

Sean Conley’s memo is the first update on Mr Trump’s health since Thursday.

Earlier on Saturday the president delivered a speech in front of cheering supporters at the White House in his first public appearance since being hospitalised with the virus.

There had been concerns that he might still be contagious following his three-day hospital stay.

The doctor’s memo said the latest tests on the president revealed there was “no longer evidence of actively replicating virus”, and that his viral load was “decreasing”.

However, the statement did not say whether Trump had tested negative for Covid-19.

In the memo, Dr Conley said President Trump had been given sensitive lab tests that detect how much of the virus is still in his system.

Trump first started showing symptoms of coronavirus 10 days ago, and was admitted to Walter Reed Medical Center a day later, on 2 October.

His rival in next month’s presidential election, Joe Biden, has been campaigning in Pennsylvania. He said his “heart goes out” to all those families who have lost someone they love to coronavirus, BBC reported.

More than 214,000 Americans are known to have died of Covid-19.