Monthly Notifiable Disease Surveillance Report - Jun 2009

Thursday 19th September 2019


Key notifiable disease trends

  • Campylobacteriosis: 397 campylobacteriosis cases were notified in June 2009 compared to 274 cases notified in the same month of the previous year (Figure 1). There were 233 (58.7%) laboratory-confirmed cases. For the 12 month period ending 30 June 2009, the highest incidence rates were reported from South Canterbury DHB (242.3 per 100 000 population) followed by Hutt Valley (234.0 per 100 000) DHB compared to a national rate of 164.5 per 100 000 population.
  • Cryptosporidiosis: 67 cryptosporidiosis cases (49 laboratory-confirmed cases) were notified in June 2009 compared to 45 cases notified in the preceding month. For the 12 month period ending 30 June 2009 the national rate was 20.8 per 100 000 population compared to 15.9 for the same 12 month period last year. The cases had varied ages, ranging from less than 1 year to 70+ years, with the highest number of cases in the 1-4 years age group (21 cases). One case was hospitalised. Among the cases where risk factor information was recorded, 62.5% (10/16) had recreational water contact, 25.0% (2/8) had faecal contact, 14.3% (1/7) had consumed food from a food premise and11.1% (1/9) had contact with farm animals.
  • Dengue fever: 23 cases of dengue fever were notified in June 2009 compared to five notified cases during the same month of the previous year. For the 12 month period ending 30 June 2009 the national rate was 4.2 per 100 000 population. The highest number of cases was in the 50-59 years age group (6 cases). Two cases were hospitalised. Overseas travel was recorded for 17 of the cases with the travel history and the remaining 6 cases recorded as unknown. The countries visited during the incubation period were the Cook Islands (15), Fiji (1) and Papua New Guinea (1).
  • Meningococcal disease: Based on the earliest date available1, 11 cases (10 laboratory-confirmed) of meningococcal disease were notified during June 2009. In comparison, five cases were notified the previous month, May 2009, and 12 cases were notified during the same month last year, June 2008. For the 12 month period ending 30 June 2009, Whanganui DHB recorded the highest incidence rate of (6.3 per 100 000 population, 4 cases), followed by Hawke's Bay DHB (5.9 per 100 000, 9 cases) and Wairarapa DHB (5.0 per 100 000, 2 cases). The highest age-specific incidence rate was in infants aged less than one year (37.5 per 100 000 population, 24 cases), followed by those in the 1-4 years age group (11.9 per 100 000, 28 cases) and those in the 15-19 years age group (5.0 per 100 000, 16 cases).
  • Non-seasonal influenza: In New Zealand, non seasonal influenza A (H1N1) became notifiable on 29 April 2009 and 1,191 cases of influenza A (H1N1) were notified in June 2009 (758 confirmed, 39 probable, 363 suspect and 31 under investigation).The preceding month reported 21 cases. There were 86 hospitalised cases. The highest number of cases was recorded from Capital and Coast DHB (264 cases) followed by Canterbury (179 cases) and Hutt Valley (137 cases) DHBs. For the latest information on the non seasonal influenza A (H1N1) situation in New Zealand see http://www.moh.govt.nz/influenza-a-h1n1.
  • Pertussis: 115 cases of pertussis were notified in June 2009, compared to 108 notifications in the preceding month and 25 notifications in same month of the previous year (Figure 2). There were 34 (29.6%) laboratory-confirmed cases. The highest numbers of cases were reported from Canterbury (14 cases), Waikato (13 cases) and Auckland (12 cases) DHBs. For the 12 month period ending 30 June 2009, the highest incidence rates were reported from West Coast (74.1 per 100 000 population, 24 cases) and Nelson Marlborough (71.5 per 100 000, 97 cases) DHBs compared to a national rate of 21.9 per 100 000 population. The current 12 month rate by age group was highest amongst infants aged less than one year (128.0 per 100 000 population, 82 cases), followed by children in the 1-4 years age group (37.3 per 100 000, 88 cases).
  • Rheumatic fever: 21 cases of rheumatic fever (18 initial attacks and 3 recurrent attacks) were notified in June 2009 compared to 12 notifications in the preceding month and 15 notifications in the same month of the previous year. The cases were reported from Counties Manukau (9), Waitemata (3),Northland (2), Auckland (2), Waikato (2), Lakes (1), Tairawhiti (1) and Capital and Coast (1) DHBs.
  • Rickettsial disease: One laboratory-confirmed case of rickettsial disease was notified in June 2009. The case was a 40-49 year old male from Waikato DHB and was hospitalised. The case had not travelled overseas during the disease incubation period and the probable source of the disease is thought to be contact with rats while duck shooting.

1The ‘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 - Jun 2009

Tables:

Monthly National Totals - Jun 2009

Monthly DHB Totals - Jun 2009

Monthly Rolling Totals - Jun 2009

 

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Monthly Notifiable Disease Surveillance Report - Jun 2009

Tables:

Monthly National Totals - Jun 2009

Monthly DHB Totals - Jun 2009

Monthly Rolling Totals - Jun 2009

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