H1N1 Vaccine Trials Happening In North Texas

How did a handful of H1N1, or swine flu, cases balloon into a global pandemic in less than two months? With concerns among health officials that the virus will make a strong comeback this fall, North Texas could be on the front line for a vaccine.

CBS Dallas | July 9, 2009

Tags:. .pandemic. .swine. .comeback. .flu. .virus