Monthly Notifiable Disease Surveillance Report - Nov 2008

Wednesday 18th September 2019


Key notifiable disease trends

  • Hydatid disease: 2 cases of hydatid disease, both still under investigation were notified in November 2008. A 72 year old male from the Cook Islands was referred to New Zealand for medical care. One 36 year old female from Auckland was diagnosed with hydatid disease two years ago when living in Australia and has new recurrence of symptoms.
  • Invasive pneumococcal disease: 50 cases of invasive pneumococcal disease were notified in November 2008. The cases were reported from Waitemata (9), Counties Manukau (7), Bay of Plenty (7), Auckland (6), Canterbury (6), Waikato (4), Hawke’s Bay (2), Capital and Coast (2), Lakes, Tairawhiti, Taranaki, MidCentral, Hutt Valley, Otago and Southland DHBs (1 case each). The cases were distributed by age as follows 6 (<1 years), 10 (1-4 years), 1 (15-19 years), 4 (30-39 years), 3 (40-49 years), 10 (50-59 years), 6 (60-69 years) and 10 (70+ years). 34 of the cases were hospitalised and three cases died from invasive pneumococcal disease (1 aged 1-4 years, 1 aged 40-49 years and 1 aged 70+ years).
  • Legionellosis: 20 cases of legionellosis were notified in November 2008 compared to 7 cases in the same month of the previous year (Figure 1). Five of the cases are confirmed, five cases are probable, and the remaining ten cases are still under investigation. The cases were from Canterbury (5), Counties Manukau (3), Waitemata, Auckland, Waikato, Bay of Plenty, Capital and Coast and South Canterbury DHBs (2 cases each). Seven cases were hospitalised. The cases were distributed by age as follows: 3 (30-39 years), 1 (40-49 years), 4 (50-59 years), 6 (60-69 years) and 6 (70+ years). The species involved was identified for eight of the cases: Legionella longbeachae serogroup 1 or 2 (2), L. longbeachae sg 2 (1), L. longbeachae sg unknown (1), L. dumoffii (1), L. pneumonia sg 1 (1), and L. pnemophila sg 1 (2).
  • Leptospirosis: 12 cases of leptospirosis were notified in November 2008 compared to three cases during the same month in the previous year. The cases were from Waikato (2), Otago (2), Lakes, Tairawhiti, Taranaki, Hawke’s Bay, Wanganui, MidCentral, West Coast and Canterbury DHBs (1 case each). Nine cases were confirmed and four of these cases were hospitalised. The serovar was recorded for five of the cases: Leptospira Hardjo (3), L. Ballum (1) and L. Tarassovi (1). Ten of the cases had risk factor information associated with exposure to farm animals, one case had been to Thailand during the incubation period and risk factor information was not recorded for the remaining case.
  • Meningococcal disease: Based on the earliest date available1, 15 cases of meningococcal disease were notified during November 2008, 14 (93.3%) of which were laboratory-confirmed. In comparison, 8 cases were notified the previous month, October 2008, and 5 cases were notified during the same month last year, November 2007. For the 12 month period ending 30 November 2008, Wanganui DHB recorded the highest incidence rate of 7.9 per 100 000 population (5 cases), followed by Hawke’s Bay DHB (7.8 per 100 000 population, 12 cases). The highest age-specific incidence rate was in infants aged less than one year (32.4 per 100 000 population, 20 cases), followed by those in the 1-4 years age group (14.3 per 100 000 population, 33 cases), and those in the 15-19 years age group (4.4 per 100 000 population, 14 cases).
  • Pertussis: 56 cases of pertussis were notified in November 2008 bringing the year to date total to 373. There were 14 (25%) laboratory-confirmed cases. The highest numbers of cases were reported from Waikato and Canterbury DHBs (13 cases each).Auckland DHB has notified an outbreak of pertussis involving two cases (final report). For the previous 12 months, Nelson Marlborough DHB had the highest incidence rate of 23.8 per 100 000 population (6 cases) compared to a national rate of 9.2 per 100 000 population. The current 12 month rate by age group was highest amongst infants aged less than one year (61.5 per 100 000 population, 38 cases), followed by children in the 10-14 years age group (11.4 per 100 000 population, 35 cases) and adults in the 50-59 years age group (11.3 per 100 000 population, 58 cases).
  • VTEC/STEC: Eight cases of VTEC/STEC infections were notified in November 2008 compared with four notified cases in the same month of the previous year (Figure 2).The cases were reported from Auckland (2), Canterbury (2), Waitemata, Counties Manukau, Waikato and Wairarapa DHBs (1 case each). The cases were distributed by age as follows: 1 (<1 years), 3 (1-4 years), 1 (15-19 years), 1 (30-39 years), 1 (40-49 years) and 1 (50-59 years).VTEC O157 was isolated for four of the cases. Risk factors recorded include:contact with animals (4), attended a social function (2), attended school (1), recreational water contact (1), non habitual water supply (1), and overseas during incubation period (1).


1
The ‘earliest’ date refers to the earliest recorded date for the case (onset or hospitalisation date rather than report date, if available). ‘Earliest’ date, as opposed to ‘report date’ alone, is used throughout the analysis of meningococcal disease notification data.

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Report:

Monthly Notifiable Disease Surveillance Report - Nov 2008

Tables:

Monthly National Totals - Nov 2008

Monthly DHB Totals - Nov 2008

Monthly Rolling Tables - Nov 2008

 

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Monthly Notifiable Disease Surveillance Report - Nov 2008

Tables:

Monthly National Totals - Nov 2008

Monthly DHB Totals - Nov 2008

Monthly Rolling Tables - Nov 2008

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