ATLANTA -- Emory University researchers have started vaccinating adult volunteer participants in the first of several national clinical trials of a new H1N1 vaccine.

The Emory clinical trial will evaluate the safety and immune response to an H1N1 vaccine and help determine how the pandemic and seasonal flu shots should be given to make it most effective. The results of the trial will help determine how to begin a fall 2009 pandemic flu vaccination program.

Dr. Mark Mulligan at Emory says a second study focused on small children and young adults will begin in about a week.

Other trial locations include Baylor College of Medicine, Saint Louis University, University of Iowa, University of Maryland School of Medicine in Baltimore and Vanderbilt University.

If you would like to volunteer for the Emory study call 1-877-424-4673 for information on the tests for adults or 404-727-4044 for the tests on children.