Scientist Noah Wilson-Rich is creating vaccines for honey bees against CCD and Nosema.
"This summer, [Best Bees Company LLC] will field-test an antifungal vaccine, made from yeast sugar, along with a probiotic supplement for bees. They hope the vaccine will act against the fungal spore Nosema, a growing threat to hives in the United States and one of the parasites linked to CCD."
http://sciencecareers.sciencemag.org/career_magazine/previous_issues/articles/2013_04_02/caredit.a1300061 (http://sciencecareers.sciencemag.org/career_magazine/previous_issues/articles/2013_04_02/caredit.a1300061)