[19] Mean (SD) age of these 129 patients was 34 years (9.1), and 73 (57%) were women. Ninety-four patients (73%) had been previously diagnosed with HIV. Among these 94 patients, 22 (23.4%) were taking antiretrovirals on admission, and 77 (81%) reported taking PCP prophylaxis (76 with trimethoprim-sulfamethoxazole, 1 with dapsone). The median (interquartile range) CD4 cell count among 128 patients with available values was 74 cells/mm3 (17–192), and 98 patients (77%) had a CD4 cell count below 200 cells/mm3. This evidence concerns the gene CD4 and pneumocystosis.