U.S. President Joe Biden has tested negative for COVID-19, the White House said.

Axar.az reports that the PCR test was done after a White House staff member — who had flown with Biden on Air Force One on Friday — tested positive for COVID on Monday. The staff member, who was fully vaccinated and boosted, experienced symptoms on Sunday. Biden had tested negative on Sunday and Monday, but was tested again on Wednesday as a precaution.

The results come the day after Biden talked about his latest plans for the highly contagious omicron variant — and tried to reassure vaccinated people about breakthrough cases.

"Because omicron spreads so easily, we'll see some fully vaccinated people get COVID, potentially in large numbers," Biden said. "There will be positive cases in every office, even here in the White House."