(CNN) Health and Human Services Secretary Alexander Azar stressed that he was still in charge of the task force addressing the novel coronavirus following President Donald Trump's announcement that Vice President Mike Pence would lead US efforts to battle the outbreak.

"I'm still chairman of the task force," Azar said Wednesday, as a White House news briefing on the coronavirus concluded and Trump and Pence looked on.

"Mick Mulvaney has been serving an invaluable role for me as acting chief of staff, helping to coordinate across the government with my colleagues and the whole of government approach," Azar continued. "Having the vice president gives me the biggest stick one could have in the government on this whole of government approach."

Just minutes before, Trump had said Pence would lead the US government's response to the coronavirus. Azar's post-news conference statements muddled the message on who is in charge of the administration's response to the crisis, which was perhaps the biggest news to come out of Trump's meandering news conference on the virus Wednesday evening.

Azar's comments came after CNN reported earlier Wednesday that Trump had privately expressed frustration with his HHS secretary , accusing Azar of not keeping him updated enough.

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