The statement from the Holy See press office described Francis as having a “flu-like state.” Through much of last autumn and winter, Francis battled acute bronchitis and recurring bouts of influenza, which forced him to cancel a quick trip to Dubai in November to participate in the U.N. climate conference.

Among Pope Francis’ activities for the day was a meeting with the Pontifical Academy of Sciences and those participating in a Christmas contest.

Pope Francis canceled all scheduled audiences on Monday due to a "slight flu-like state," the Vatican confirmed. Despite the precautionary move, officials assured that plans for the 87-year-old to visit Belgium and Luxembourg later this week remain unchanged.