Pope Francis remains in critical condition, according to the Vatican, with blood tests showing mild signs of kidney failure “which is currently under control,” the Vatican said Sunday, as the 88-year-old pontiff battles pneumonia in both his lungs.

It added that Francis, who was hospitalized over a week ago, has not shown further respiratory crises since yesterday evening.

Some of his blood tests indicate “an initial, mild, renal failure, which is currently under control,” the Vatican said, adding that the Pope continues to be “vigilant and well oriented.”