Sanofi To Buy Vaccine Maker Dynavax for $2.2 Billion

Sanofi (SNY) will buy vaccine maker Dynavax (DVAX) Technologies for $2.2 billion, or $15.50 a share, adding to its adult immunizations. Dynavax stock soared early Wednesday. Dynavax has an adult hepatitis B vaccine with a shingles candidate in phase 1/2 trials. Sanofi stock lost a fraction in premarket trade. Shares of the French drug giant have been rangebound for several…