Pneumococcal vaccines are made using the polysaccharide molecules that make up the capsule of the bacterial cell. How would the vaccine given to adults differ from the one given to infants?
A. The adult vaccine is an attenuated whole-agent vaccine; the vaccine for infants is an inactivated whole-agent vaccine.
B. The adult vaccine consists of purified capsular polysaccharide; the vaccine for infants is a conjugated vaccine in which the polysaccharide is attached to a protein.
C. The adult vaccine is a DNA vaccine; the vaccine for infants is a subunit vaccine.
D. The adult vaccine is a toxoid; the vaccine for infants is a subunit vaccine.