PITTSBURGH -- Officials confirmed Thursday that the death of a 57-year-old Allegheny County woman was linked to the H1N1 virus.

The woman, who passed away earlier this month, also had underlying medical conditions that put her at risk.

There have now been five deaths in Allegheny County linked to H1N1, according to the State Department of Health.

There have been three deaths in Fayette County and one each in Beaver, Butler, Mercer and Washington counties.