Rp. Bendall et al., RESTRICTION-FRAGMENT-LENGTH-POLYMORPHISM ANALYSIS RULES OUT CROSS-INFECTION AMONG RENAL PATIENTS WITH TUBERCULOSIS, The Journal of hospital infection, 30(1), 1995, pp. 51-56
A cluster of five cases of tuberculosis occurred on a renal unit in 19
93. The initial impression was that this was an outbreak, and cross-in
fection was suspected. Restriction fragment length polymorphism analys
is was carried out on the strains of Mycobacterium tuberculosis isolat
ed from these cases, using a DNA probe directed against the insertion
sequence IS6110. DNA fingerprints obtained by this method differed for
all the strains tested, ruling out cross-infection as a cause of the
outbreak. This technique is a useful adjunct to standard epidemiologic
al investigations in outbreaks of tuberculosis.