Annual Summary of Outbreaks in New Zealand, 2014

Wednesday 29th September 2021

Summary of outbreaks 2014

In 2014, the number of reported outbreaks and associated cases increased (863 outbreaks involving 14,828 cases) when compared with 2013 (651 outbreaks involving 7143 cases). A total of 332 outbreak-associated cases required hospitalisation and five cases died. Public health units reporting the highest rate in 2014 were Manawatu (43.2 outbreaks per 100,000 population) and Taranaki (28.7 per 100,000). 

The causal agent (pathogen, toxin or chemical) was identified in 71.8% of outbreaks. Norovirus was the most commonly identified enteric pathogen accounting for 37.3% of all outbreaks and 63.1% of the associated cases. Four deaths were associated with norovirus outbreaks in 2014. The most commonly implicated non-enteric agent was measles.

The most common outbreak settings were long-term care facilities (34.9%) followed by private homes (18.5%) and childcare centres (15.5%).

Person-to-person transmission was reported for 87.6% of outbreaks in 2014. Multiple modes of transmission were implicated in 30.9% of outbreaks.

Norovirus and Campylobacter were the most common pathogens identified in foodborne outbreaks. The most commonly implicated food types in outbreaks associated with a foodborne mode of transmission were were poultry and dairy, followed by oils/sugars. Contamination of food was the most common contributor to foodborne outbreaks (61.5%), followed by time and temperature abuses (44.0%). Unsafe sources accounted for 22.0% of the outbreaks, including 9.2% that were associated with drinking raw milk.


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2014 Annual Summary of Outbreaks



2014 Annual Summary of Outbreaks

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