For the first time in decades, researchers trying to develop a vaccine for malaria have discovered a new target they can use to attack this deadly and common parasite.
Finding a target for attack is a far cry from having a vaccine. And the history of malaria vaccines is littered with hopeful ideas that didn't pan out. Still, researchers in the field welcome this fresh approach.
Whooping cough made a comeback in California last year, which researchers have linked to vaccine refusals. And with new measles outbreaks in Southern California, New York and British Columbia, the debate over vaccination is also spreading.