Monthly Notifiable Disease Surveillance Report - Dec 2008

Tuesday 17th September 2019


Key notifiable disease trends

  • Hepatitis A: Seven cases of Hepatitis A were notified in December 2008 compared to two notified cases during he same month of the previous year. The cases were reported from Counties Manukau (3), Northland, Waitemata, Bay of Plenty and Taranaki DHBs (1 case each). Three of the seven cases had been overseas during the incubation period; the countries visited were Samoa (2) and Fiji (1). One case, infected in New Zealand, had not been identified as a household contact of an earlier case so had not received immunoglobulin prophylaxis.
  • Invasive pneumococcal disease: 48 cases of invasive pneumococcal disease were notified in December 2008. The cases were reported from Counties Manukau (10), Waikato (10), Auckland (6), Otago (4), Taranaki (3), Canterbury (3), Waitemata (2), Hawke’s Bay (2), Hutt Valley (2), Lakes, Bay of Plenty, MidCentral, Capital and Coast, Wairarapa and South Canterbury DHBs (1 case each). The cases were distributed by age as follows 4 (1-4 years), 3 (5-9 years), 2 (10-14 years), 2 (15-19 years), 6 (30-39 years), 3 (40-49 years), 5 (50-59 years), 6 (60-69 years) and 17 (70+ years). 35 of the cases were hospitalised and one case died from invasive pneumococcal disease (aged 70+ years).
  • Leptospirosis: 17 cases of leptospirosis were notified in December 2008 compared to seven during the same month of the previous year (Figure 1). The cases were from Waikato (6), Taranaki (3), Hawke’s Bay (3), Bay of Plenty, MidCentral, Nelson Marlborough, Canterbury and Otago DHBs (1 case each). The serovar was recorded for seven of the cases: Leptospira Hardjo (2), L. Pomona (2), L. Tarassovi (2) and L. Ballum (1). Ten of the cases had risk factor information associated with exposure to farm animals. Risk factor information was not recorded for the remaining seven cases.
  • Meningococcal disease: Based on the earliest date available1, 8 cases of meningococcal disease were notified during December 2008, 6 (75.0%) of which were laboratory-confirmed.In comparison, 15 were notified during the previous month, November 2008, and 10 cases were notified during the same month last year, December 2007. For the 12 month period ending 31 December 2008, Wanganui DHB recorded the highest incidence rate of 7.9 per 100 000 population (5 cases), followed by Hawke’s Bay DHB (7.8 per 100 000 population, 12 cases). The highest age-specific incidence rate was in infants aged less than one year (32.4 per 100 000 population, 20 cases), followed by those in the 1-4 years age group (14.3 per 100 000 population, 33 cases), and those in the 5-9 years age group (4.5 per 100 000 population, 13 cases).

  • Pertussis: 66 cases of pertussis were notified in December 2008 bringing the year to date total to 437. There were 20 (30.3%) laboratory-confirmed cases. The highest numbers of cases were reported from Canterbury (19) and Waikato (13) DHBs. For the previous 12 months, Nelson Marlborough DHB had the highest incidence rate of 26.8 per 100 000 population (5 cases) followed by Waikato DHB with 24.1 per100 000 population (13 cases). This compares to a national rate of 10.3 per 100 000 population. The current 12 month rate by age group was highest amongst infants aged less than one year (71.2 per 100 000 population, 44 cases), followed by children in the 10-14 years age group (13.4 per 100 000 population, 41 cases) and adults in the 50-59 years age group (12.7 per 100 000 population, 65 cases).

  • Salmonellosis: 132 cases of salmonellosis were notified in December 2008 compared to 117 notified cases in the same month of the previous year (Figure 2). The highest numbers of cases were reported from Canterbury (20), Otago (16), Auckland (11), Counties Manukau (10) and Capital and Coast (10) DHBs.19 cases were hospitalised. The serotype involved was identified for 58 of the cases. The dominant serotypes were:Salmonella Typhimurium phage type 42 (24), S. Typhimurium phage type 160 (10), S. Typhimurium phage type RDNC-May 06 (3), and S. Infantis, S. Saintpaul, S. Typhimurium phage type 135 and S. Typhimurium phage type 156 (each with two cases). 22 of the reported cases are part of the Salmonella Typhimurium phage type 42 outbreak reported in November and one further case is part of the Salmonella outbreak reported by Auckland in December (one confirmed case, three probable cases).

  • Shigellosis: 11 cases of shigellosis were notified in December 2008 compared to 5 notified cases in the same month of the previous year. The cases were reported from Auckland (2), Nelson Marlborough (2), Northland, Waikato, Bay of Plenty, Capital and Coast, West Coast, Canterbury and Southland DHBs (1 case each). The serotype involved was identified for nine of the cases; Shigella sonnei biotype g (5), S. sonnei biotype a (2), S. sonnei biotype unknown (1) and S. flexneri 3a (1). Two of the cases had been overseas during the incubation period, the countries visited were India (1), Nepal (1) and Tonga (1).



The ‘earliest’ date refers to the earliest recorded date for the case (onset or hospitalisation date rather than report date, if available). ‘Earliest’ date, as opposed to ‘report date’ alone, is used throughout the analysis of meningococcal disease notification data.

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 Notifiable Disease Surveillance Report - Dec 2008

Tables:

Monthly National Totals - Dec 2008

Monthly DHB Totals - Dec 2008

Monthly Rolling Totals - Dec 2008

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Dec 2008

Tables:

Monthly National Totals - Dec 2008

Monthly DHB Totals - Dec 2008

Monthly Rolling Totals - Dec 2008

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