Monthly Surveillance Report - Mar 2006

Tuesday 17th September 2019


Key Notifiable Disease Trends

  • Campylobacter: 1256 campylobacter cases were notified in March 2006 compared to 769 cases notified in the same month of the previous year. (Figure 1). Canterbury DHB recorded the highest number of cases (202). For the 12 month period ending 31 March 2006, South Canterbury DHB recorded the highest annual incidence rate of 661.2 per 100 000 population (349 cases) compared to the national rate of 395.3 per 100 000 population. Overall, 48 cases were hospitalised. During the incubation period, 92 (7.3%) consumed food at a food premise (188/1256 completed data field), 22 (1.8%) consumed untreated water (223/1256 completed data field), 17 (1.4%) had faecal contact (229/1256 completed data field), and 15 (1.2%) had recreational water contact (230/1256 completed data field).
  • Hepatitis A: 16 cases of Hepatitis A were notified in March 2006 compared to five notified cases in the same month of the previous year. The cases were reported from Counties Manukau (8), Waitemata (2), Auckland (2), Whanganui (2), Waikato (1), and Canterbury (1) DHBs. Six of the cases, two from Counties Manukau, two from Auckland, one from Waitemata and one from Canterbury DHBs, had been overseas during the incubation period. The countries visited were: Tonga (3), Australia (1), India (1), and Samoa (1). 
  • Legionellosis: six legionellosis cases were notified in March 2006 compared to five notified cases in the same month of the previous year. Two cases were reported from Northland, two from Counties Manukau, one each from Waitemata and Capital and Coast DHBs.  Two cases were hospitalised. The cases range in age from 40 to 72 years. The species involved was identified for four of the six cases as Legionella pneumophila serogroup 1 (3 cases) and L. longbeachae serogroup 2 (1 case). Two cases from Counties Manukau had contact with an environmental source of infection (one definite and one suspected), as part of the Beachlands outbreak.
  • Meningococcal disease: based on the earliest date available , 14 cases of meningococcal disease were notified during March 2006, of which all (100%) were laboratory-confirmed, and none were fatal. In comparison, seven cases were notified the previous month, February 2006, and 15 cases were notified during the same month last year March 2005. For the 12 month period ending 31 March 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 (54.9 per 100 000 population, 30 cases), followed by those in the 1-4 years age group (14.3 per 100 000 population, 31 cases).
  • Pertussis: 115 pertussis cases were notified in March 2006, of whom 27 (23.5%) were laboratory confirmed. The numbers of pertussis notifications per month have decreased from the peak in November 2004 when 613 cases were notified (Figure 2). One case was reported as being hospitalised. Canterbury DHB had the highest number of cases (41). For the 12 month period ending 31 March 2006, South Canterbury DHB had the highest incidence rate of 219.8 per 100 000 population (116 cases), compared to the national rate of 55.4 per 100 000 population. Over this period the incidence rate by age group was highest amongst infants aged less than one year (150.0 per 100 000 population). This was followed by children in the 10-14 years age group (98.0) and the 5-9 years age group (83.9).
  • VTEC: 20 cases of VTEC infection were notified in March bringing the total number of notified cases to 36 for the year to date. In comparison, 11 cases were notified during March 2005. Hospitalisation status was recorded for 18 cases of whom five were hospitalised and one was identified with HUS. The ESR Enteric Reference Laboratory received isolates from 19 of the 20 cases. Eighteen were serotype O157 and one was non-O157. The cases were reported from Waikato (5 cases), Nelson-Marlborough (3), Otago (3), Auckland (2), and one each from Waitemata, Counties Manukau, Lakes, Hawke’s Bay, Canterbury, South Canterbury, and Southland DHBs. The majority of the cases were in the 1-4 years age group (8 cases) followed by those in the 20-29 years age group (5 cases).

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Report:

Monthly Surveillance Report - Mar 2006

Tables:

Monthly National Totals - Mar 2006

Monthly DHB Totals - Mar 2006

Monthly Rolling Totals - Mar 2006

 

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Monthly Surveillance Report - Mar 2006

Tables:

Monthly National Totals - Mar 2006

Monthly DHB Totals - Mar 2006

Monthly Rolling Totals - Mar 2006

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