“…Although infections of the urinary tract with Proteus mirabilis occur less frequently than those with Escherichia coli except in young boys (Bergstrom, 1972;Hallett et al, 1976;Khan et al, 1978) and the elderly (Walkey et al, 1967;Senior, 1979), the consequences may be more serious. The predilection of P. mirabilis is for the upper urinary tract (Fairley et al, 1971 ;Svandborg EdCn et al, 1980) where damage to the renal tubular epithelium (Braude et al, 1960) and stone formation (Griffith et al, 1973) may take place.…”