Tuberculosis in New Zealand - Annual Report 2009

Thursday 19th September 2019


Summary

In 2009, 671 cases of tuberculosis (TB) were notified, these notifications comprised 300 cases of TB disease (new and relapse/reactivation cases) and 371 cases of TB infection (treatment of latent infection and old disease on preventive treatment). Annual TB disease notification rates have more than halved since 1980 and continue to trend downwards with the 2009 notification rate of 7.0 per 100 000 population.

Disease notification rates in 2009 were highest in those aged 20 to 29 years (10.9 per 100 000 population) and those in the Asian ethnic group (46.4 per 100 000 population). More than half of the disease notifications were reported by the three District Health Boards (DHBs) in the Auckland region.

Over three-quarters (228/300) of the TB disease notifications in 2009 were culture positive, of which 223 were due to Mycobacterium tuberculosis and five were due to M. bovis.

Three TB outbreaks were reported during 2009, the largest of which involved 12 confirmed cases in multiple health districts, Canterbury and Nelson Marlborough.

Over the 2005 to 2009 period, 1124 M. tuberculosis cases had TB molecular typing results of which 397 were non-unique. Cases with non-unique molecular types were significantly (p£0.05) more likely to be aged less than one year, 10 to 14 years or 15 to 19 years, to be of Māori or Pacific ethnicity and to reside in Northland, Counties Manukau or Hawke’s Bay DHBs.

From 2000 to 2009, there has been no significant change in resistance to the five routinely tested antimicrobial drugs used to treat TB.  In 2009, there were six  cases of multidrug-resistant TB (MDR-TB). 

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Report:

Tuberculosis in New Zealand - Annual Report 2009

 

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Tuberculosis in New Zealand - Annual Report 2009

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