By Douglas Quenqua
SAN DIEGO — Imagine a vaccine against smoking: People trying to quit would light up a cigarette and feel nothing. Or a vaccine against cocaine, one that would prevent addicts from enjoying the drug’s high.
Though neither is imminent, both are on the drawing board, as are vaccines to combat other addictions. While scientists have historically focused their vaccination efforts on diseases like polio, smallpox and diphtheria — with great success — they are now at work on shots that could one day release people from the grip of substance abuse.
“We view this as an alternative or better way for some people,” said Dr. Kim D. Janda, a professor at the Scripps Research Institute who has made this his life’s work. “Just like with nicotine patches and the gum, all those things are just systems to get people off the drugs.”