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WATCH: Biden says unvaccinated put communities at risk

U.S. President Joe Biden is urging unvaccinated Americans to get a shot against the coronavirus, saying they are “putting their communities at risk.”

Watch Biden’s remarks in the player above.

Biden was speaking from the White House’s South Court auditorium, celebrating that there are 160 million fully vaccinated Americans, even as he warned against dangers from the Delta variant.

“But our fight against this virus is not over right now,” Biden said. “As I speak to you millions of Americans are still unvaccinated and unprotected. And because of that, their communities are at risk, their friends are at risk, the people that they care about are at risk.”

In a briefing the president received on Tuesday, he was told the Delta variant was already responsible for half of all cases in many parts of the United States.

“Seems to me that it should cause everybody to think twice,” about holding off on getting vaccinated he said.

Over the July 4 holiday weekend, Biden on Sunday mixed the nation’s birthday party with a celebration of freedom from the worst of the pandemic.

Biden hosted more than 1,000 service members, first responders and other guests for a July Fourth celebration on the South Lawn of the White House.

For Biden it was a long-awaited opportunity to highlight the success of the vaccination campaign he championed. The event was the largest yet of his presidency, the clearest indication yet that the U.S. had moved into a new phase of virus response. Shifting from a national emergency to a localized crisis of individual responsibility, the nation also moved from vaccinating Americans to promoting global health.