Monthly Surveillance Report - Jan 2006

Friday 20th September 2019


Key Notifiable Disease Trends

  • Campylobacter: 1621 campylobacter cases were notified in January 2006 compared to 1351 cases notified in the same month of the previous year. Canterbury DHB recorded the highest number of cases (243). For the 12 month period ending 31 January 2006, South Canterbury DHB recorded the highest annual incidence rate of 687.7 per 100 000 population (363 cases) compared to the national rate of 377.5 per 100 000 population. Overall, seventy-two cases were hospitalised. During the incubation period, 122 (7.5%) consumed food at a food premise (13.0% completed data field), 49 (3.0%) had recreational water contact (15.2% completed data field), 43 (2.7%) consumed untreated water (14.4% completed data field), and 27 (1.7%) had faecal contact (15.6% completed data field).
  • Cryptosporidiosis: a total of 43 cases of cryptosporidiosis were notified in January 2006 compared to 13 cases notified in the same month of the previous year. Waikato DHB reported the highest number of cases (5). For the 12 month period ending 31 January 2006, South Canterbury DHB had the highest annual incidence rate of 92.8 per 100 000 population (4 cases) compared to a national rate of 24.6 per 100 000 population. During the incubation period, 5 (11.6%) consumed untreated water (25.6% completed data field), 5 (11.6%) had recreational water contact (22.6% completed data field), 4 (11.6%) had faecal contact (39.5% completed data field), and 4 (9.3%) consumed food from a food premise (32.6% completed data field).
  • Hepatitis A: 33 cases of Hepatitis A were notified in January 2006 compared to four notified cases in the same month of the previous year (Figure 1). The cases were reported from Canterbury (25), Auckland (3), Lakes (2), Northland (1), MidCentral (1) and Hutt (1) DHBs. Sixteen of the Canterbury cases were part of an outbreak in a childcare centre, and of these seven had household contact with another case. Five other cases, three from Auckland and one each from MidCentral and Canterbury DHBs, had been overseas during the incubation period (Iraq, Samoa, Thailand, Vanuatu, Vietnam and Cambodia).
  • Lyme disease: Although not strictly notifiable but interesting to note, a case of Lyme disease was notified in January 2006. The case was an adult male who was bitten by a tick from a forest deer infected with Borrelia burgdorferi while in Czechoslovakia.
  • Meningococcal disease: based on the earliest date available , eight cases of meningococcal disease were notified during January 2006, of which six  (75.0%) were laboratory-confirmed, and none were fatal. In comparison, 12 cases were notified the previous month, December 2005, and 22 cases were notified during January 2005. For the 12 month period ending 31 January 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 (32) with an incidence rate of 10.1 per 100 000 population. 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 (15.7 per 100 000 population, 34 cases).
  • Pertussis: 137 pertussis cases were notified in January 2006, of whom 48 (35.0%) 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). Five cases were reported as being hospitalised. Canterbury DHB had the highest number of cases (50). For the 12 month period ending 31 January 2006, South Canterbury DHB had the highest incidence rate of 238.7 per 100 000 population (126 cases), compared to the national rate of 65.2 per 100 000 population. Over this period the incidence rate by age group was highest amongst infants aged less than one year (204.9 per 100 000 population). This was followed by children in the 10-14 years age group (111.1) and the 5-9 years age group (102.4).
  • Salmonellosis: 146 salmonellosis cases were notified in January 2006 compared to 84 cases notified in the same month of the previous year. Canterbury DHB had the highest number of cases (20 cases). For the 12 month period ending 31 January 2006, Wairarapa DHB had the highest incidence rate of 68.1 per 100 000 population, compared to the national rate of 38.7 per 100 000 population. Fourteen cases were reported as being hospitalised. The ESR Enteric Reference Laboratory received 171 isolates (excluding Paratyphi and Typhi) in January. The predominant types identified were Salmonella Typhimurium (STM) phage type 160 (40 isolates), S. Typhimurium phage type 1 (17 isolates), and S. Typhimurium phage type 156 (13 isolates). The first S. Wentworth serotype in New Zealand was isolated this month associated with travel to India. Five of the 40 STM 160 isolates were part of a household cluster in Canterbury.
  • Shigellosis: 17 shigellosis cases were notified in January 2006 compared to eight cases notified in the same month of the previous year.  The cases were from Auckland (5), Waitemata (4), Whanganui (3), Northland (2), Waikato (2), and Canterbury (1) DHBs. For 15 of the 17 cases the ESR Enteric Reference Laboratory received an isolate. The species involved were: Shigella sonnei Biotype a  (11), S. sonnei Biotype g (3), and S. species (1).

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Report:

Monthly Surveillance Report - Jan 2006

Tables:

Monthly National Totals - Jan 2006

Monthly DHB Totals - Jan 2006

Monthly Rolling Totals - Jan 2006

 

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Monthly Surveillance Report - Jan 2006

Tables:

Monthly National Totals - Jan 2006

Monthly DHB Totals - Jan 2006

Monthly Rolling Totals - Jan 2006

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