“As always, I am optimistic,” said Lopez Obrador, 67, who has resisted wearing a face mask.
Mexico is in the grip of a second wave of the pandemic and has the fourth-highest death toll worldwide.
The health ministry on Sunday reported 10,872 new confirmed coronavirus cases and 530 fatalities, bringing its totals to 1,763,219 infections and 149,614 deaths.
More about: Mexico coronavirus