Monthly Surveillance Report - Apr 2006

Thursday 19th September 2019


Key Notifiable Disease Trends

  • Campylobacter: 793 campylobacter cases were notified in April 2006 compared to 729 cases notified in the same month of the previous year. Waitemata DHB recorded the highest number of cases (108). Overall, 31 cases were hospitalised. During the incubation period, 33 (4.2%) consumed food at a food premise (76/793 completed data field), 12 (1.5%) consumed untreated water (91/793 completed data field), 11 (1.4%) had faecal contact (98/793 completed data field), 8 (1.0%) had recreational water contact (96/793 completed data field), 5 (0.6%) had contact with a case (166/793 completed data field) and 3 (0.4%) had contact with sick animal (90/793). For the 12 month period ending 30 April 2006, South Canterbury DHB recorded the highest annual incidence rate of 651.7 per 100 000 population (344 cases) compared to the national rate of 397.1 per 100 000 population.
  • Haemophilus influenzae type b disease (Hib):  three Hib cases were notified in April 2006 (Figure 1). Of these, two were laboratory-confirmed and one is under investigation. The two cases aged between 1-4 years were vaccinated and the remaining case was aged 70+ years.
  • Hepatitis A: 10 cases of Hepatitis A were notified in April 2006 compared to two notified cases in the same month of the previous year. The cases were reported from Counties Manukau (8), Whanganui (1) and Capital and Coast (1) DHBs. Five of the cases, all from Counties Manukau DHB had been to Tonga during the incubation period. 
  • Meningococcal disease: based on the earliest date available , seven cases of meningococcal disease were notified during April 2006, of which 6 (85.7%) were laboratory-confirmed, and none were fatal. In comparison, 14 cases were notified the previous month, March 2006, and 21 cases were notified during the same month last year April 2005. For the 12 month period ending 30 April 2006, Wairarapa DHB recorded the highest incidence rate of 10.5 per 100 000 population (4 cases) while Waikato DHB recorded the highest number of cases (31) with an incidence rate of 9.8 per 100 000 population. The highest age-specific incidence rate was in infants aged less than one year (56.7 per 100 000 population, 31 cases), followed by those in the 15-19 years age group (13.9 per 100 000 population, 37 cases).
  • Pertussis: 64 pertussis cases were notified in April 2006, of whom 10 (15.6%) were laboratory confirmed. The number of pertussis notifications per month have decreased from the peak in November 2004 when 613 cases were notified (Figure 2). The number of cases per month are now around the average number reported (74.5 cases) between the two most recent pertussis epidemics (i.e. from mid-2001 to mid-2004). However, from 1997 to mid-1999 (the start of the epidemic that ended in 2001) monthly case numbers ranged between 5 and 39.  Of the 64 cases notified in April 2006, 3 were reported as being hospitalised. Waikato DHB had the highest number of cases (21). For the 12 month period ending 30 April 2006, South Canterbury DHB had the highest incidence rate of 212.2 per 100 000 population (112 cases), compared to the national rate of 53.4 per 100 000 population. Over this period the incidence rate by age group was highest amongst infants aged less than one year (137.2 per 100 000 population). This was followed by children in the 10-14 years age group (95.6 per 100 000 population) and the 5-9 years age group (82.8 per 100 000 population).
  • Shigellosis: 8 shigellosis cases were notified in April 2006 compared to 6 cases notified in the same month of the previous year.  The cases were from Waitemata (2), Auckland (2), Capital and Coast (2), Counties Manukau (1) and Hawke’s Bay (1) DHBs. For 6 of the 8 cases the ESR Enteric Reference Laboratory received an isolate. The species involved were: Shigella sonnei Biotype a  (3), S. sonnei Biotype g (1), S. flexneri 6 (1) and S. flexneri y variant (1).

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Report:

Monthly Surveillance Report - Apr 2006

Tables:

Monthly National Totals - Apr 2006

Monthly DHB Totals - Apr 2006

Monthly Rolling Totals - Apr 2006

 

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Monthly Surveillance Report - Apr 2006

Tables:

Monthly National Totals - Apr 2006

Monthly DHB Totals - Apr 2006

Monthly Rolling Totals - Apr 2006

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