This boy has meningitis caused by Strep pneumoniae, the most common cause of infectious meningitis in general. The vaccine for Strep pneumo is a polysaccharide protein conjugate vaccine. The other major bacteria with a vaccine like this is H. influenzae.
so I thought in kids/elderly you give the diptheria-toxoid conjugate vaccine and adults you give the polysacc conjugate. why does this kid get the polysacc conjugate?