Monthly Surveillance Report - Feb 2006

Saturday 21st September 2019


Key Notifiable Disease Trends

  • Gastroenteritis: 129 gastroenteritis cases were notified in February 2006 compared to 42 cases notified in the same month last year (Figure 1). The highest numbers of cases were reported from MidCentral (74) and Waikato (13 cases) DHBs. Eighty-seven of the notified cases were identified as being part of an outbreak.
  • Hepatitis A: 16 cases of Hepatitis A were notified in February 2006 compared to seven notified cases in the same month of the previous year. The cases were reported from Counties Manukau (6), Canterbury (3), Waitemata (2), Auckland (2), Capital and Coast (2), and Bay of Plenty (1) DHBs. Seven of the cases, three from Counties Manukau, two from Auckland, and two from Capital and Coast DHBs had been overseas during the incubation period. The countries visited were: India (3), Samoa (2), Fiji (1), and Tonga (1).  The case who travelled to Tonga had sexual contact involving possible faecal-oral transmission. One case from Canterbury was a contact of a confirmed case in the childcare centre outbreak back in January 2006.
  • Leptospirosis: 13 cases of leptospirosis were notified in February 2006 compared to seven notified cases in the same month of the previous year.  Four (30.8%) of the cases were notified from Hawke’s Bay DHB. Occupation was recorded for 12 cases, 10 were farmers, one was a meat worker, and one was an investor. The Leptospira species and serovar was recorded for 12 of the 13 notified cases: L. Interrogans sv pomona (7 cases), L. Borgpetersenii sv hardjo (3), L. Borgpetersenii sv ballum (1), and L. Borgpetersenii sv tarassovi (1).
  • Measles: 6 cases of measles were notified in February 2006 compared to two notified cases in the same month of the previous year. None of the cases have been laboratory confirmed. The cases were reported from Canterbury (3 cases), Waitemata (2), and Nelson-Marlborough (1) DHBs. None of the cases had been immunised against measles.
  • Meningococcal disease: based on the earliest date available , seven cases of meningococcal disease were notified during February 2006, of which five (71.4%) were laboratory-confirmed, and none were fatal. In comparison, nine cases were notified the previous month, January 2006, and 14 cases were notified during the same month last year February 2005. For the 12 month period ending 28 February 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 (30) with an incidence rate of 9.4 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 (14.8 per 100 000 population, 32 cases).
  • Pertussis: 95 pertussis cases were notified in February 2006, of whom 45 (17.9%) 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). Two cases were reported as being hospitalised. Waikato DHB had the highest number of cases (24). For the 12 month period ending 28 February 2006, South Canterbury DHB had the highest incidence rate of 223.6 per 100 000 population (118 cases), compared to the national rate of 58.9 per 100 000 population. Over this period the incidence rate by age group was highest amongst infants aged less than one year (161.0 per 100 000 population). This was followed by children in the 10-14 years age group (103.9) and the 5-9 years age group (88.0).
  • Salmonellosis: 159 salmonellosis cases were notified in February 2006 compared to 139 cases notified in the same month of the previous year. Canterbury DHB had the highest number of cases (22 cases). For the 12 month period ending 28 February 2006, Nelson-Marlborough DHB had the highest incidence rate of 65.3 per 100 000 population, compared to the national rate of 39.2 per 100 000 population. Fourteen cases were reported as being hospitalised. The serotype was identified for 155 of the 159 notified cases.  The predominant types identified were Salmonella Typhimurium phage type 160 (22 cases) and S. Typhimurium phage type 1 (20).  One uncommon serotype was identified, S. Zanzibar from Waikato DHB with no travel history.

Note: Click on the document links below to open. These documents are in PDF format. You will need to download the free Adobe Acrobat Reader to view them.

Report:

Monthly Surveillance Report - Feb 2006

Tables:

Monthly National Totals - Feb 2006

Monthly DHB Totals - Feb 2006

Monthly Rolling Totals - Feb 2006

 

DOWNLOADS

Monthly Surveillance Report - Feb 2006

Tables:

Monthly National Totals - Feb 2006

Monthly DHB Totals - Feb 2006

Monthly Rolling Totals - Feb 2006

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