Cluster Number | Time | MLVA type [24]** (Phage type) | Sources of infection identified by epidemiological investigations |
---|---|---|---|
1 | Oct 2007 | 4-16-13-0-517 (DT170) | Contaminated chicken meat from a sushi shop |
2 | Oct-Nov 2007 | 3-10-8-9-523 (DT44) | Use of raw eggs (cheesecake) at a common bakery, interstate clusters in NSW, Victoria and South Australia |
3* | Nov 2007 | 3-11-10-8-523 (DTU302, U290) | Raw egg milkshake consumed by three siblings |
7 | Nov 2007 | 3-20-17-11-523 (DT9) | Meal prepared and cooked at home function (deep-fried ice cream) |
4 | Jan-March 2008 | 3-9-8-12-523 (DT170) | Raw eggs in custard for a cake at private party consumed by some cases |
5 | Feb-March 2008 | 3-17-16-13-523 (DT126) | Linked to local egg supplier, confirmed by environmental sampling |
6 | May 2008 | 3-12-10-12-523 (U290) | Restaurant outbreak, environmental samples from restaurant confirmed the link. |
8 | Sept-Oct 2008 | 3-10-14-11-496 (DT9) | Linked to eating mousse made with raw eggs |
9 | Nov 2008 | 3-9-7-13-523 (DT170) | Interviews indicated restaurant outbreak. Cross- contamination of pesto suspected. |
10 | Nov 2008 | 3-17-16-13-523 (DT126) | Linked to raw eggs contamination |
11 | March 2009 | 3-9-7-12-523 (DT170) | Fried ice cream positive and raw beef positive. Chopping board swabs and salad samples were positive for STM. One point source outbreak in the middle of endemic activity of PT170 |
12* | Feb-April 2009 | 3-9-8-12-523 (DT170) | Restaurant related outbreak |
13* | March-April 2010 | 3-9-7-12-523 (DT170) | Restaurant related outbreak. Epi link confirmed by positive cultures from the chef and his family. |
14 | June 2010 | 3-9-7-14-523 (16 cases) 3-9-7-15-523 (15 cases) (DT170) | Cases from narrow geographic area. Interviews indicated kebab store outbreak, later confirmed by detection of undistinguishable STM MLVA type in chicken, tabouli and hummus. |
15* | Aug 2010 | 3-9-7-13-523 (DT170) | Human cases from narrow geographic area. Epidemiological link to deep-fried ice cream made with raw eggs. Farm inspection not conducted. |