| Antibody tests | Negative AIDS cases | Non ICL | Pneumonia |
| Alterations in lymphocyte cell surface markers in various human infections. |
| Williams RC, Koster FT, Kilpatrick KA (1983, November). |
| | Williams et al evaluated T-cell subsets in 146 febrile patients with serious acute infections... 19 of 45 patients having a CD4 count of less than 300 per microliter. A graph on page 811 that plots the CD4 counts for all 45 pneumonia patients. This reveals that 31 of 45 (69%) had CD4 counts less than 500 cells/mm3, 19 of 45 (42%) had counts below 300, 13 of 45 (29%) had counts below 200, 6 of 45 (13%) had 100 or less, and 2 of 45 (4%) had values less than 50. The average CD4 count for all the people with pneumonia was 574". |
| | Am J Med: Volume 75; 807-816 | 1983 |