As President Donald Trump announced he would leave a military hospital on Monday after three days of COVID-19 treatment, challenger Joe Biden attacked the president for downplaying the seriousness of the disease even after contracting it.
"Now that he's busy tweeting campaign messages, I would ask him to do this: listen to the scientists," Biden said during a campaign speech in Miami's Little Havana neighborhood. "Support masks."
Biden, the Democratic former vice president, also spoke in the city's Little Haiti neighborhood and planned to appear at a NBC News town hall in the evening from Miami.
Florida is seen as a must-win for Trump's re-election campaign, which has almost no path to victory if he fails to collect the state's crucial 29 Electoral College votes.
"Folks, if we win Florida, you've won," Biden told a group of Haitian Americans. "You've flat won."
Trump said on Monday that he was feeling well and would leave Walter Reed National Military Medical Center in the evening. The 74-year-old president, who announced his coronavirus diagnosis late on Thursday night, was transported to the hospital on Friday after developing a high fever and receiving supplemental oxygen.
Biden, who has made Trump's uneven response to the pandemic a central theme of his campaign, sent well wishes to the president but also argued that Trump's illness only reinforces the need to take the virus seriously.
The Biden campaign has avoided large-scale events for months, instead holding more controlled stops with few attendees. Throughout his remarks on Monday, Biden kept a mask over his face.
Trump has repeatedly soft-pedaled the deadliness of the disease, even as it has killed nearly 210,000 Americans and devastated the economy. Before falling ill, he had continued to hold massive rallies with little social distancing, and the virus has torn through the White House and Trump allies for days.
Florida was the most important of a dozen states that had voter registration deadlines on Monday.
Biden's visit to Little Havana represented an effort to make headway among Cuban Americans, a group that is largely Republican. Polls show Biden is winning among Hispanic voters overall but trails the president among Cuban Americans.
Trump has taken a hard line on Cuba, reversing many of the steps toward normalizing relations that began under the Obama administration, when Biden was vice president.