(CNN) A source close to the coronavirus task force said President Donald Trump's continued hand shaking has worried some federal health officials who wish he would stop until medical experts have more confidence he won't contract the virus.

Vice President Mike Pence has notably opted for the elbow bump that is recommended by infectious disease experts.

But Pence said during Tuesday's coronavirus task force briefing that he has been shaking hands as well.

"As the President has said, in our line of work, you shake hands when someone wants to shake your hand, and I expect the President will continue to do that, I'll continue to do it," Pence said in response to a question about it. "What this is is a broad recommendation for Americans, but a really good recommendation is to wash your hands often with hot soap and water for 20 seconds."

Last week, at a Fox News town hall, Trump signaled he would continue shaking hands, explaining he is a politician.

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