Streptococcus pneumoniae Danish serotype 9V Ab.IgG^2nd specimen/1st specimen:Ratio:Pt:Ser:Qn
streptococcus pneumoniae danish serotype 9v ab.igg^2nd specimen/1st specimen:ratio:pt:ser:qn
S pneum Da 9V IgG 2:1 Ser-Rto
s pneum da 9v igg 2:1 ser-rto