TABLE 2.
Characterization of selected outbreaks of S. enterica serovar Heidelberg by phage typing, PFGE, and R typing
| Outbreak no. | Date | Source of outbreak | Source of isolates | PTa | PFGE | R typeb | Total cases |
|---|---|---|---|---|---|---|---|
| 00.086 | December 2000 | Christmas party | Human | 19 | SHEXAI.0001 | Sensitive | 5 |
| 19 | SHEXAI.0008 | S | 1 | ||||
| 47 | SHEXAI.0001 | SSu | 1 | ||||
| 99.055 | December 1999 | Nursing home | Human | 6 | SHEXAI.0001 | Sensitive | 4 |
| Human | 6 | SHEXAI.0002 | Sensitive | 1 | |||
| 98.042 | December 1998 | Sandwich shop | Human | 29 | SHEXAI.0020 | ST | 3 |
| Human | 29 | Not done | ST | 4 | |||
| 98.041 | December 1998 | Christmas party | Human | 47 | SHEXAI.0001 | Sensitive | 22 |
| Human | 47 | SHEXAI.0015 | Sensitive | 2 | |||
| Human | 47 | SHEXAI.0034 | Sensitive | 1 | |||
| Human | 47 | SHEXAI.0045 | Sensitive | 1 | |||
| Human | 47 | Not done | Sensitive | 26 | |||
| Turkey/pork | 47 | SHEXAI.0001 | Sensitive | 2 | |||
| 98.039 | December 1998 | Christmas party | Human | 6 | SHEXAI.0052 | ASSuT | 9 |
| Human | 6 | Not done | ASSuT | 10 | |||
| 98.003 | April 1998 | Pot luck dinner | Human | 17 | SHEXAI.0001 | A | 5 |
| 17 | SHEXAI.0009 | A | 1 | ||||
| AT | SHEXAI.0033 | Su | 1 | ||||
| 97.02 | July 1997 | Restaurant | Human | 29 | SHEXAI.0001 | Sensitive | 8 |
| Human | 29 | SHEXAI.0016 | Sensitive | 1 | |||
| Human | 29 | Not done | Sensitive | 4 | |||
| 96.076 | December 1996 | Christmas party | Human | 29 | SHEXAI.0025 | SSuT | 4 |
| Human | 29 | SHEXAI.0026 | SSuT | 1 | |||
| 29 | SHEXAI.0027 | Sensitive | 1 | ||||
| 29 | SHEXAI.0028 | SSuT | 1 | ||||
| 29 | SHEXAI.0029 | SSuT | 1 | ||||
| 29 | SHEXAI.0030 | SSuT | 1 | ||||
| 94.047 | December 1994 | Family gathering | Human | 8 | SHEXAI.0015 | T | 8 |
| 94.002 | January 1994 | Family gathering | Human | 19 | SHEXAI.0001 | Sensitive | 7 |
| Human | 19 | Not done | Sensitive | 8 | |||
| Turkey | 19 | SHEXAI.0001 | Sensitive | 2 | |||
| Pork roast/ham | 19 | SHEXAI.0001 | ASSu | 2 | |||
| 92.059 | August 1992 | Family gathering | Human | 47 | SHEXAI.0001 | Sensitive | 7 |
| Human | 47 | Not done | Sensitive | 9 | |||
| 91.019 | June 1991 | Community dinner | Human | 19 | Not done | Sensitive | 14 |
| Turkey/stuffing | 19 | Not done | Sensitive | 3 | |||
| 91.059 | October 1991 | Social event | Human | 6 | Not done | Sensitive | 13 |
| Beef stew | 6 | Not done | Sensitive | 1 | |||
| Total | 195 |
a
PT, phage type.
b
R type represents antimicrobial resistance. Antimicrobials used: ampicillin (A), chloramphenicol (C), ciprofloxacin, streptomycin (S), sulfadiazine (Su), tetracycline (T), and sulfamethoxazole-trimethoprim.