| distribution of salmonella typhi and salmonella paratyphi b phage types in italy from 1974 through 1985. | the temporal changes in occurrence and distribution in salmonella typhi and paratyphi b phage types in italy during a twelve year period are considered. from 1974 to 1985, 2.075 isolates of salmonella typhi and 830 isolates of salmonella paratyphi b were phage typed at the national centre for enterobacteria in rome and the three regional centres for enterobacteria in milan, palermo and pisa. the most prevalent types of salmonella typhi were a, c1, d1, vi degraded strains e1, i+iv and c4. types a ... | 1988 | 3127661 |
| rdna fingerprinting as a tool in epidemiological analysis of salmonella typhi infections. | characterization of 169 strains of salmonella typhi of phage types c1, c4, d1 and d9 isolated in 1975-88 was carried out by rdna gene restriction pattern analysis. twenty-four isolates had been recovered during four large waterbone outbreaks in the last 20 years in sicily; 145 strains, isolated from apparently sporadic cases of infection in southern italy in the same period of time, were also examined. application of rrna-dna hybridization technique after digestion of chromosomal dna with cla i ... | 1991 | 1752306 |