1. Supplemental Digital Content 4 – Figure 2. These figures shows the results of CMV IgM tests performed in cord or (at 6 weeks) plasma/serum samples and of the CMV DNA-PCR tests performed on frozen peripheral blood cells in HIV-infected (Figure A) and HIV-uninfected (Figure B) infants. Frozen samples had been used for other studies and were not available for every child at every time point.

2. 97 HIV-infected infants 35 were not tested Sample tested 10 tested PCR only 9 tested both PCR/IgM 43 tested IgM only 3 (+/+) 1 (+/-) 5 (-/-) Figure S2(A): Results of CMV-IgM and CMV DNA-PCR at birth and 6 weeks of age: 97 HIV-infected infants 3 (+) 7 (-) 3 (+) 40 (-) 97 HIV-infected infants 11 were not tested Sample tested 4 tested PCR only 36 tested both PCR/IgM 46 tested IgM only 7 (+/+) 17 (+/-) 2 (-/+) 10 (-/-) 2 (+) 2 (-) 13 (+) 33 (-) Results from birthResults from 6 weeks of age

3. 196 HIV-uninfected infants 91 were not tested Sample tested 4 tested PCR only 15 tested both PCR/IgM 86 tested IgM only 13 (-/-) 2 (+/-) Figure S2 (B): Results of CMV-IgM and CMV DNA-PCR at birth and 6 weeks of age: 196 HIV-uninfected infants 4 (-)3 (+) 83 (-) 196 HIV-uninfected infants 65 were not tested Sample tested 3 tested PCR only 43 tested both PCR/IgM 85 tested IgM only 10 (+/+) 6 (+/-) 1 (-/+) 26 (-/-) 2 (+) 1 (-) 35 (+) 50 (-) Results from birth Results from 6 weeks of age