Tuberculosis in New Zealand: Annual Report 2015

Thursday 13th December 2018


Summary

Tuberculosis disease (TB) is a notifiable condition in New Zealand. The TB notification rate has been relatively stable since 2007 apart from a small decrease recorded in 2013. The 2015 TB notification rate was 6.4 per 100,000 population (294 cases). The majority of TB notifications were for new disease, with relapse/reactivation cases made up a small number of the notifications. A high proportion of TB cases (88.8%) were laboratory confirmed.

The highest notification rates in 2015 were recorded for Auckland, followed by Counties Manukau, and Capital & Coast DHBs.

Between 2011 and 2015, there were demographic differences among new TB case rates. Rates were higher in males than females, especially those aged 15–39 years. The Asian ethnic group has consistently experienced the highest notification rates. As in previous years (2006–2015), higher rates of TB occurred in socioeconomically deprived areas.

Not being born in New Zealand and current or recent residence with a person not born in New Zealand have consistently been dominant risk factors.

Two (0.8%) of the culture-positive TB cases reported in 2015 were multidrug-resistant TB (MDR-TB, defined as resistance to at least isoniazid and rifampicin). Both these MDR-TB cases were born overseas. Between 2006 and 2015, there has been a significant trend of decreasing pyrazinamide resistance, but no significant changes in resistance to isoniazid, rifampicin, ethambutol or streptomycin.

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Report:

Tuberculosis in New Zealand: Annual Report 2015

 

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Tuberculosis in New Zealand: Annual Report 2015

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