President Joe Biden canceled a planned speech at UnidosUS' annual conference in Las Vegas, due to a positive test for COVID-19.
According to CNN, the audience let out "audible gasps" when this was revealed to conferencegoers.
This is not the first time the president has been diagnosed; he also tested positive for COVID last September, along with the First Lady, forcing them to isolate.
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Former President Donald Trump himself famously became ill with COVID on the 2020 campaign trail following large rallies, prior to the vaccines being developed, and had to spend some time being treated at Walter Reed.
While COVID deaths have gone down considerably since the pandemic peak, driven by vaccination and the development of antiviral treatments that allow most people to avoid life-threatening illness, the virus is still present and causing outbreaks around the country.