Human trials for H1N1 flu vaccine start August , says University of Maryland . Concern about H1N1 grew after it spread around the globe earlier this year . Comment: Vaccine so far tested only in animals , where it has shown to be effective .
Human trials for H1N1 flu vaccine start August , says University of Maryland . Concern about H1N1 grew after it spread around the globe earlier this year . Patients will be monitored two months for safety issues , followed by checkups . Vaccine so far tested only in animals , where it has shown to be effective .