Former U.S. President George H.W. Bush will remain for a few more days in a Houston hospital where he was being treated for pneumonia, the hospital said on Monday.
He said while President Bush has recovered from pneumonia, he continues to deal with chronic bronchitis which is a condition more prevalent with age.
Spokesman Jim McGrath said last week that with the Bushes expected to return to ME soon, doctors wanted him to remain at the hospital to ensure a clean bill of health.
The hospitalization is the second this year for Bush.
Bush served as president from 1989 to 1993.
"No father has ever been more blessed, or prouder", Bush, 92, tweeted alongside a picture of himself resting in bed while his son stands next to him. He spent two weeks in the hospital with pneumonia in January, then returned with the flu in February - a visit that was initially kept quiet.
The hospital said staff there would continue to monitor Bush and expected to discharge him by the end of the week.
In January, Bush was sent to this hospital with an acute respiratory problem.
The letter was written before he was admitted to hospital with pneumonia.