| bk virus and a new type of jc virus excreted by hiv-1 positive patients in rural tanzania. | hiv-1 positive patients from tanzanian villages near shirati were examined for urinary excretion of the human polyomaviruses jc and bk using the polymerase chain reaction (pcr). bk virus (bkv) was detected in 11 of 23 individuals tested. the bkv dna sequences were all closely related to prototype gardner strain and bkv (dun). in contrast, a new type of jcv, termed type 3 [or jcv (shi)], was identified in seven of these same 23 individuals by comparison with type 1 and type 2 sequences of the vp1 ... | 1995 | 7503691 |