During the weekly general audience at the Vatican on Wednesday, he asked a priest to read his prepared statement as he couldn't read it himself. The 88-year-old pontiff explained his difficulty.
On Sunday, he had to stop his sermon midway and asked a colleague to finish due to breathing issues.
The pope has had to adjust his schedule multiple times because of declining health, especially respiratory problems that worsen in winter.
The Vatican confirmed that Pope Francis has been battling bronchitis for the past week and has held private audiences at his residence instead of the Apostolic Palace.
Despite his health challenges, the pope maintains a busy schedule with numerous appointments and meetings.
With the Holy Year of the Catholic Church and several significant pilgrimages planned, Pope Francis is expected to preside over many important events.