Figure 2From: Interrelationship of Streptococcus pneumoniae, Haemophilus influenzae and Staphylococcus aureus colonization within and between pneumococcal-vaccine naïve mother-child dyads Comparison of observed and calculated prevalence in children. Observed prevalence of dual and triple carriage in children (i.e. pattern filled bars) and calculated prevalence given by random models (i.e. solid filled bars). Here HEU means HIV-uninfected children born to HIV-infected mothers and HUU mean HIV-uninfected children born to HIV-uninfected mothers. aP (S.pneumoniae, H.influenzae) - observed probability that a child carried both S. pneumoniae and H. influenzae. bP (S. pneumoniae) P (H. influenzae) – calculated (or expected) probability of dual carriage under the assumption that co-carriage is an independent process Back to article page