Monthly Surveillance Report - Nov 2005

Monday 23rd September 2019


Key Notifiable Disease Trends

  • Campylobacter: 1668 campylobacter cases were notified in November 2005 compared to 1278 cases notified in the same month last year. Canterbury DHB recorded the highest number of cases (231). South Canterbury DHB recorded the highest annual incidence rate of 714.3 per 100 000 population compared to the national rate of 364.4 per 100 000 population. Seventy cases were hospitalised. For those cases with the relevant information recorded, 63.8% (83/130) consumed food from a food premise, 17.3% (26/150) had faecal contact, 17.1% (24/140) consumed untreated water, 9.5% (14/147) had recreational water contact, 3.0% (4/132) had contact with sick animals, and 1.0% (3/307) had contact with another case during the incubation period.
  • Enterobacter sakazakii: the first case of Enterobacter sakazakii was notified in November 2005. The case was an adult male from Counties Manukau DHB who had peritonitis and had been in a renal unit.
  • Gastroenteritis: 37 gastroenteritis cases were notified in November 2005 compared to 129 cases notified in the same month last year (Figure 1). The number of cases in the year to date (540) represents a marked decrease compared to the 1280 cases for the same period. Significant reductions in notifications were seen in Waikato, MidCentral, Canterbury, South Canterbury, and Otago DHBs, which have been attributed to fewer norovirus outbreaks in rest homes this year.
  • Hydatid disease: a case of laboratory confirmed hydatid disease was notified during November 2005. The case was an adult female who had suspected contact with an infected dog. 
  • Meningococcal disease: based on the earliest date available , 19 cases of meningococcal disease were notified during November 2005, of which 15 (78.9%) were laboratory-confirmed. In comparison, 15 cases were notified the previous month, and 25 cases were notified during November 2004. For the previous 12 months, Wairarapa DHB recorded the highest incidence rate of 13.1 per 100 000 population (5 cases). Over the 12 month period, Waikato DHB recorded the highest number of cases (32) with an incidence rate of 10.1 per 100 000 population. The national age-specific incidence rate was highest amongst infants aged less than one year (58.6 per 100 000 population, 32 cases), followed by those in the 1-4 years age group (18.5 per 100 000 population, 40 cases).
  • Pertussis: 219 pertussis cases were notified in November 2005, of whom 43 (19.6%) were laboratory confirmed. Pertussis numbers have decreased from the peak in November 2004 with 613 cases (Figure 2). Canterbury DHB had the highest number of cases (90) in November. For the previous 12 months, Southland DHB had the highest incidence rate of 315.5 per 100 000 population (326 cases), compared to a national rate of 82.8 per 100 000 population. Hospitalisation data was recorded for 149 cases of which 12 (8.1%) were hospitalised. The incidence rate by age group for the previous 12 months was highest amongst infants aged less than one year (243.3 per 100 000 population). This was followed by children in the 10-14 years age group (142.1) and the 5-9 years age group (140.5).
  • Salmonellosis: 129 salmonellosis cases were notified in November 2005 compared to 94 cases notified in the same month last year. Auckland, Waikato and Canterbury DHBs had the highest number of cases (14 cases each). For the previous 12 months, Southland DHB had the highest incidence rate of 64.8 per 100 000 population, compared to a national rate of 36.2 per 100 000 population. Hospitalisation data was recorded for 65 cases of which 12 (18.5%) were hospitalised. The ESR Enteric Reference Laboratory received 143 isolates in November. The predominant type identified was Salmonella Typhimurium phage type 160 (44 isolates). One outbreak of S. Typhimurium phage type 135 involving six cases was reported from South Auckland. Three uncommon Salmonella serotypes were isolated, S. Johannesburg (2 isolates), S. Alachua (1 isolate), and S. Zanzibar (1 isolate).

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Report:

Monthly Surveillance Report - Nov 2005

Tables:

Monthly National Totals - Nov 2005

Monthly DHB Totals - Nov 2005

Monthly Rolling Totals - Nov 2005

 

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Monthly Surveillance Report - Nov 2005

Tables:

Monthly National Totals - Nov 2005

Monthly DHB Totals - Nov 2005

Monthly Rolling Totals - Nov 2005

Ph: +64 4 914 0700 Fax: +64 4 914 0770 Email: survqueries@esr.cri.nz