Los Angeles Times

A half dose may be enough

Nathan Compton, 5, grimaces as he gets an H1N1 vaccination from nurse Leslie Trotter, left, as his mother Madeline Rubenstein, right, comforts him at a H1N1-swine flu clinic in Sacramento, Calif., Monday, Nov. 16, 2009. Pharmaceutical maker Novartis AG said Tuesday a U.S. clinical study suggests that half a dose of its swine flu vaccine may be sufficient to protect people from the virus and could allow many more to be immunized with current supplies.Rich Pedroncelli, Associated Press