Baseline demographic and immune parameters of HIV-infected and uninfected Malawian adult study participants.

Median and interquartile ranges (IQR) for age and immunological data are shown. Statistical significance of differences between the HIV negative group and all HIV-infected adults was tested using Fisher’s exact test (for categorical variables) or Mann Whitney U test (for continuous variables). † Data on S. pneumoniae carriage are missing for some patients for technical reasons.