Pittsburgh -- U.S. public health experts indicated Sunday the H1N1 flu will make a strong return, possibly as soon as the end of August.
Drug makers will begin this week testing two potential vaccines against an anticipated H1N1 pandemic but vaccinations are not expected to be available until mid-October, the Pittsburgh Post-Gazette reported Sunday.
The most at-risk segment of the population -- pregnant women, those with chronic diseases, healthcare and emergency medical workers, and children -- will be the first recipients, the Centers for Disease Control indicated.