outbreaks each and Cyclospora species caused one outbreak. Fifteen outbreaks were caused by unknown pathogens. Food vehicles The investigations of the 13 outbreaks identified food vehicles for seven outbreaks. The Salmonella Typhimurium PFGE 0001 outbreaks were associated with eating lamb shanks and pork hocks and one of the Salmonella Infantis outbreaks was associated with eating nasi-lemak. Two norovirus outbreaks were associated with eating salads. One outbreak each was associated with the following foods: roast meats (suspected toxin mediated) and multiple foods (unknown pathogen). In the previous five years there were 66 foodborne or suspected foodborne outbreaks and food vehicles were identified for 31 (47%) outbreaks. Of these 31 outbreaks, the most commonly implicated foods were dishes containing eggs in nine outbreaks, chicken in five outbreaks, fresh produce in six outbreaks, eight outbreaks implicating a range of dishes, and multiple dishes in three outbreaks. Of the 35 outbreaks with unknown food vehicles, the aetiological agents included Salmonella (n=14), norovirus (n=7), (n=1), (n=1), Campylobacter Cyclospora Clostridium perfringens (n=2) and unknown aetiology (n=10). Epidemiological investigation and evidence The evidence that supported that the 13 investigations of enteric outbreaks were due to foodborne or suspected foodborne transmission was obtained using analytical studies for six outbreaks and descriptive cases series (DCS) for seven outbreaks. The analytical studies involved interviewing those people who were at the meal using a questionnaire on all foods/drinks available. For the outbreaks investigated as a DCS, there was strong circumstantial evidence to support suspected foodborne transmission including ill people eating a common meal (4 outbreaks) or visiting a common food business (3 outbreaks). For the previous five years the evidence used to support that 66 outbreaks were due to foodborne transmission was obtained using analytical studies for 22 (33%) outbreaks and seven outbreaks found an association between illness and a food. There were 42 (64%) outbreaks investigated as DCS. No formal study was carried out for two outbreaks.
outbreaks each and Cyclospora species caused one outbreak. Fifteen outbreaks were caused by unknown pathogens. Food vehicles The investigations of the 13 outbreaks identified food vehicles for seven outbreaks. The Salmonella Typhimurium PFGE 0001 outbreaks were associated with eating lamb shanks and pork hocks and one of the Salmonella Infantis outbreaks was associated with eating nasi-lemak. Two norovirus outbreaks were associated with eating salads. One outbreak each was associated with the following foods: roast meats (suspected toxin mediated) and multiple foods (unknown pathogen). In the previous five years there were 66 foodborne or suspected foodborne outbreaks and food vehicles were identified for 31 (47%) outbreaks. Of these 31 outbreaks, the most commonly implicated foods were dishes containing eggs in nine outbreaks, chicken in five outbreaks, fresh produce in six outbreaks, eight outbreaks implicating a range of dishes, and multiple dishes in three outbreaks. Of the 35 outbreaks with unknown food vehicles, the aetiological agents included Salmonella (n=14), norovirus (n=7), Campylobacter (n=1), Cyclospora (n=1), Clostridium perfringens (n=2) and unknown aetiology (n=10). Epidemiological investigation and evidence The evidence that supported that the 13 investigations of enteric outbreaks were due to foodborne or suspected foodborne transmission was obtained using analytical studies for six outbreaks and descriptive cases series (DCS) for seven outbreaks. The analytical studies involved interviewing those people who were at the meal using a questionnaire on all foods/drinks available. For the outbreaks investigated as a DCS, there was strong circumstantial evidence to support suspected foodborne transmission including ill people eating a common meal (4 outbreaks) or visiting a common food business (3 outbreaks). For the previous five years the evidence used to support that 66 outbreaks were due to foodborne transmission was obtained using analytical studies for 22 (33%) outbreaks and seven outbreaks found an association between illness and a food. There were 42 (64%) outbreaks investigated as DCS. No formal study was carried out for two outbreaks.
wa_ozfoodnet_annual-report_2014.docx