Monthly Notifiable Disease Surveillance Report - Jun 2010

Tuesday 17th September 2019


Key notifiable disease trends

  • Giardiasis: 162 cases of giardiasis were notified in June 2010 compared to 153 cases notified in the same month the previous year. The highest number of cases were reported in Waitemata and Canterbury DHBs (23 cases each), followed by Auckland and Capital and Coast DHBs (22 cases each). Among the cases where risk information was recorded, 48.5% (16/33) had contact with other symptomatic people, 44.4% (12/27) had faecal contact, 10.0% (10/25) had contact with farm animals, and 15.8% (6/38) were overseas during incubation period. Eleven Giardia outbreaks involving 31 cases were reported in June.
  • Hydatid disease:  One case of hydatid disease from Waitemata DHB was notified in June 2010. This case was found not to meet the case definition and has since been denotified.
  • Legionellosis: 20 cases of legionellosis were notified in June 2010 (4 confirmed, 1 probable and 15 under investigation) compared to four cases notified in the same month of the previous year.  The highest number of cases were from Waitemata (7 cases) and Auckland (4 cases) DHBs.  The cases were distributed by age as follows: 5-9 years (1 case), 15-19 years (1 case), 30-39 years (4 cases), 40-49 years (3 cases), 50-59 years (2 cases), 60-69 years (4 cases) and 70+ years (5 cases).  Thirteen cases were hospitalised. The species involved was identified in six cases; Legionella bozemanae serogroup 1, L. dumoffii, L. longbeachae serogroup 1 or 2, L. pneumophila serogroup 1, L. pneumophila serogroup 15, and L. pneumophila serogroup 6 (1 case each).
  • Meningococcal disease: Based on the earliest date available1, 10 cases of meningococcal disease were notified during June 2010, seven (70.0%) of which were laboratory-confirmed.  In comparison, eight cases were notified in the previous month and 12 during the same month last year. For the 12-month period ending 30 June 2010, the highest incidence rate was reported in Tairawhiti DHB (10.8 per 100 000 population, 5 cases), followed by MidCentral (7.2 per 100 000, 12 cases) and Northland (6.4 per 100 000, 10 cases) DHBs.  The highest age-specific rate was in infants aged less than one year (47.6 per 100 000 population, 30 cases), followed by those in the 1-4 years age group (15.7 per 100 000, 38 cases).
  • Shigellosis: 20 cases of shigellosis were notified in June 2010 compared to nine in the same month of the previous year. Seven cases were hospitalised. The highest number of notifications was reported in Counties Manukau DHB (5 cases), followed by Waitemata DHB (4 cases). Cases were aged between 1-4 years and 70+ years, with the highest number of notifications in the 20-29 years age group (6 cases). The serotype involved was identified for 16 of the cases: Shigella flexneri 2a (5 cases), S. sonnei biotype a (3 cases), S. flexneri 3a (2 cases), S. sonnei biotype g (2 cases), S. boydii 1 (1 case), S. flexneri 2b (1 case), S. flexneri 3c (1 case), and S. flexneri 6 (1 case). Three of the Waitemata DHB cases were part of an outbreak. Eight of the cases had been overseas during the incubation period; the most frequent overseas destination was India (3).
  • Taeniasis:  One laboratory-confirmed case of taeniasis was notified in June 2010. The case was a male in the 20-29 years age group from Counties Manukau DHB who had reported overseas travel to Cambodia during the incubation period.
  • Tuberculosis disease: 32 cases of tuberculosis disease were notified during June 2010, 23 (71.9%) of which were laboratory confirmed. The highest number of notifications was reported in Auckland DHB (9 cases), followed by Waitemata (4 cases), Counties Manukau (4 cases) and Canterbury (4 cases) DHBs. Cases were aged between less than one year and 70+ years, with the highest number of notifications in the 30-39 years age group (8 cases).  Ethnicity was recorded for 30 cases (93.8%): Asian (19 cases), Pacific Peoples (4 cases), Maori (3 cases) and European (3 cases). Country of birth was recorded for 23 cases, 18 (78.3%) of which were born overseas. Two Capital and Coast DHB cases were part of separate outbreaks.
  • VTEC/STEC infection: 13 cases of VTEC/STEC infection were notified in June 2010, compared to 9 cases notified in the same month of the previous year.  The highest number of cases was reported in Canterbury DHB (5 cases).  The cases were aged between 1-4 years and 60-69 years old, with the highest number of cases in the 1-4 years age group (5 cases). Two cases were hospitalised. Escherichia coli O157:H7 was isolated in eight cases.  Among the cases for which risk factor information was recorded, 85.7% (6/7) had contact with animals, 57.1% (4/7) attended school, 42.9% (3/7) had contact with nappies, and 28.6% (2/5) had recreational contact with water.
  • Yersiniosis: 28 cases of yersiniosis were notified in June 2010 compared to 32 cases notified in the previous month and 15 cases in the same month of the previous year. One case was hospitalised. The highest number of notifications was reported in Canterbury DHB (7 cases), followed by Auckland  and Waitemata (4 cases each) DHBs. Cases were aged between less than 1 year and 60-69 years, with the highest number of notifications in the 1-4 years age group (8 cases). The serotype involved was identified for 10 of the cases: Yersinia enterocolitica Biotype 4 (5 cases), Y. enterocolitica Biotype 3 (3 cases), and Y. pseudotuberculosis (2 cases).

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.   

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Report:

Monthly Notifiable Disease Surveillance Report - Jun 2010

Tables:

Monthly National Totals - Jun 2010

Monthly DHB Totals - Jun 2010

Monthly Rolling Totals - Jun 2010

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Jun 2010

Tables:

Monthly National Totals - Jun 2010

Monthly DHB Totals - Jun 2010

Monthly Rolling Totals - Jun 2010

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