One Allegheny County resident remained hospitalized yesterday after being diagnosed with the H1N1 flu, also known as swine flu, according to Guillermo Cole, spokesman for the county Health Department.

Hospitalization is not common among people who get this flu. Until the county recently stopped confirming all reports of probable H1N1 flu, out of a total of 66 cases confirmed, only eight people have been hospitalized, Mr. Cole said.

"The others have been released and are recovering or have recovered," he said. "Those eight people ranged in age from 8 to 64 years old."

Since June 12, the state has stopped monitoring every case of H1N1, he said, except cases requiring hospitalization, or that might be fatal, cases in institutional settings, cases involving health care workers and cases with patients under 1 year old and 65 years old and up.

The World Health Organization reports that many of the cases reported in the past few weeks had apparent links to travel or were local outbreaks kept from spreading in their communities.