Annual Summary of Outbreaks in New Zealand, 2012

Wednesday 29th September 2021

Summary of outbreaks in 2012

There were 716 outbreaks reported during 2012, involving 10 491 cases. A total of 191 cases required hospitalisation and 40 cases died.

The highest number of outbreaks was reported by Auckland Public Health Unit, which represented 31.8% of all outbreaks in 2012.

The causal agent (pathogen, toxin or chemical) was identified in 74.9% of outbreaks.

Enteric agents were implicated in 91.6% of outbreaks. The most commonly identified pathogen was norovirus, followed by Giardia spp., Cryptosporidium spp., and Campylobacter spp. The most commonly implicated non-enteric agent was Bordetella pertussis.

The most common settings where exposure to or transmission of causal agents occurred were  long-term care facilities and the private home environment.

Person-to-person transmission was reported for 81.0% of outbreaks in 2012. Multiple modes of transmission were implicated in 25.0% of outbreaks.

The most commonly implicated food types in outbreaks associated with a foodborne mode of transmission were dairy and grains/beans, followed by poultry and oils/sugar.

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Annual Summary of Outbreaks in New Zealand, 2012



Annual Summary of Outbreaks in New Zealand, 2012

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