TABLE 5.

Prevalence of ACV resistance in immunocompromised groups of patients

Clinical status	No. of patients	No. of patients shedding resist- ant isolates	% of patients shedding resist- ant isolates
Oncology or bone marrow transplant	46	3	6.5
Heart or lung transplant	20	2	10
HIV positive	29 (17)a	1 (1)	3.4 (5.9)

^aData in parentheses are for patients diagnosed with AIDS. The majority of patients with AIDS (15 of 17) had CD4 counts of less than 200, although the single resistant isolate was obtained from an individual with a CD4 count in the range of 200 to 500.