Mr Trump wore a black mask over his mouth and nose whilst visiting the Walter Reed National Military Medical Centre on Saturday. He was at the facility in Bethesda, Maryland, to visit injured service personnel.
The president had earlier stoked controversy by not wearing a mask whilst America’s COVID-19 epidemic deepened over the last few months.
Speaking to reporters ahead of the visit Mr Trump said: “I’ll probably have a mask if you must know. I’ll probably have a mask.
“I think when you’re in a hospital especially in that particular setting, where you are talking to a lot of soldiers, people that in some cases just got off the operating table. I think it’s a great thing to wear a mask.
“I’ve never been against masks but I do believe they have a time and a place.”
Trump wearing a mask during a visit to Walter Reed National Military Medical Centre
President Trump previously caused controversy by not wearing a mask at public events
Mr Trump has only been pictured wearing a mask once before whilst visiting Michigan a Ford factory back in May, where ventilators and other medical equipment was being manufactured.
However the president refused to wear one in front of journalists so they couldn’t have the “pleasure of seeing it”.
Mr Trump stated: “I had one on before. I wore one in the back area.
“I didn’t want to give the press the pleasure of seeing it.”
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“I’ve never been against masks but I do believe they have a time and a place”
Ahead of the Michigan visit in May the state’s attorney general Dana Nessel compared Mr Trump to a “petulant child who refuses to follow the rules”.
The American Centres for Disease Control urged US residents to wear masks or other face coverings back in April to slow the spread of COVID-19.
At the time Mr Trump declined commenting: “I don’t think I’m going to be doing it.
“Wearing a face mask as I greet presidents, prime ministers, dictators, kings, queens – I just don’t see it.”
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During a June interview with the Wall Street Journal Trump suggested many of those wearing masks were only doing it as a political statement against him.
However the president had changed his mind by the beginning of this month when he told Fox Business Network “I’m all for masks”.
Asked whether he’d wear a mask Trump replied: “If I were in a tight situation with people I would, absolutely.”
Trump also claimed wearing a mask made him look like the Long Ranger, a fictional masked character who operated in America’s ‘wild west’.
The US has seen a dramatic increase in the number of coronavirus cases over the past few weeks, with a record 66,000 new cases recorded on Friday according to Johns Hopkins University.
Earlier this week America exceeded three million total infections, by some margin the highest figure in the world.
More than 130,000 people have died from coronavirus in the United States.
The worst of the current outbreaks are in the south and west of the country.
There are concerns intensive care beds could runout in some US hospitals
On Saturday Arizona’s state health department warned 90 percent of its adult intensive care beds are now occupied.
There are also concerns about intensive care bed availability in Texas and Florida.
Speaking to CNN Peter Hotez, dean of tropical medicine at Baylor College of Medicine, said if the US continues on its current trajectory it will experience “one of the most unstable times in the history of our country”.
Referring to hospitals he added: “We won’t have enough manpower, human power, to manage all of this.”