Monthly Surveillance Report - Jun 2006

Friday 20th September 2019


Key Notifiable Disease Trends

  • Campylobacter: 1283 campylobacter cases were notified in June 2006 compared to 741 cases notified in the same month of the previous year. (Figure 1). Almost 38% of the cases in June were reported from the Auckland region. Overall, 36 cases were hospitalised. During the incubation period, 106 8.3%) consumed food at a food premise (179/1283 completed data field), 21 (1.6%) had faecal contact (159/1283 completed data field), 16 (1.2%) consumed untreated water (147/1283 completed data field), 7 (0.5%) had recreational water contact (157/1283 completed data field), 5 (0.4%) had contact with a case (246/1283 completed data field) and 5 (0.4%) had contact with a sick animal (138/1283). For the 12 month period ending 30 June 2006, South Canterbury DHB recorded the highest annual incidence rate of 653.6 per 100 000 population (345 cases) compared to the national rate of 432.3 per 100 000 population.
  • Dengue: two cases of dengue fever were notified in June 2006, bringing the year to date total to 10.  Both cases were confirmed by IgM serology. One case travelled to Fiji and the other to Thailand.  Both cases were hospitalised. The cases reported taking some precautions against biting insects while overseas. 
  • Influenza: during June 2006 (weeks 22 – 26), 788 consultations for influenza-like illness were reported from 83 general practices (on average) in 23 out of 24 health districts.  The average weekly consultation rate for June was 43.5 per 100 000 patient population, compared to a rate of 111.4 per 100 000 patient population during the same month last year.  Waikato had the highest consultation rate (122.6 per 100 000), followed by Eastern Bay of Plenty (87.8 per 100 000). A total of 228 swabs were received for testing during June. Of these, 63 influenza viruses were isolated, 40 as A/New York/55/2004 (H3N2) - like, 21 as influenza A (yet to be sub-typed), one as A/New Caledonia/20/1999 (H1N1)-like, and one as B/Malaysia/2506/2004-like. In addition, 62 influenza viruses were reported from the laboratory-based (non-sentinel) surveillance, 30 as influenza A (yet to be sub-typed), and 32 as A/New York/55/2004 (H3N2) – like.
  • Meningococcal disease: based on the earliest date available , 11 cases of meningococcal disease were notified during June 2006, of which 10 (90.9%) were laboratory-confirmed, and none were fatal. In comparison, 10 cases were notified the previous month, May 2006, and 26 cases were notified during the same month last year June 2005. For the 12 month period ending 30 June 2006, Waikato DHB recorded the highest incidence rate of 8.5 per 100 000 population (27 cases). The highest age-specific incidence rate was in infants aged less than one year (53.1 per 100 000 population, 29 cases), followed by those in the 1-4 years age group (13.4 per 100 000 population, 29 cases).
  • Pertussis: 79 pertussis cases were notified in June 2006, of whom 9 (11.4%) were laboratory confirmed. The number of pertussis notifications per month have decreased from the peak in November 2004 when 613 cases were notified. Of the 79 cases notified in June 2006, two were reported as being hospitalised. Canterbury DHB had the highest number of cases (23). For the 12 month period ending 30 June 2006, South Canterbury DHB had the highest incidence rate of 170.5 per 100 000 population (90 cases), compared to the national rate of 49.6 per 100 000 population. Over this period the incidence rate by age group was highest amongst infants aged less than one year (120.8 per 100 000 population). This was followed by children in the 10-14 years age group (85.0 per 100 000 population) and the 5-9 years age group (72.7 per 100 000 population).  The graph shows that the age distribution of notified cases has changed significantly in the years following the most recent epidemic that began in 2004. As a proportion of total cases, the older age group is starting to carry the majority of diagnosed pertussis, a trend that looks set to continue in the second half of 2006. Reported incidence for people aged 15 years and older has increased almost six times from 11 cases per 100 000 people per year (average rate for all years between 1997 and 2003) to 59.4 cases per 100 000 people per year for 2004 and 2005 (statistically significant at p<0.0001). The average incidence-rate among people aged 15+ years since the beginning of 2004 is now one third that of the under 15 population (compared to less than one tenth prior to 2004).

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Report:

Monthly Surveillance Report - Jun 2006

Tables:

Monthly National Totals - Jun 2006

Monthly DHB Totals - Jun 2006

Monthly Rolling Totals - Jun 2006

 

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Monthly Surveillance Report - Jun 2006

Tables:

Monthly National Totals - Jun 2006

Monthly DHB Totals - Jun 2006

Monthly Rolling Totals - Jun 2006

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