Monthly Notifiable Disease Surveillance Report - Aug 2011

Wednesday 18th September 2019


Key notifiable disease trends

  • Brucellosis: One case of brucellosis (male aged 40-49 years) was notified in August 2011 from Tairawhiti DHB. However, upon further investigation this case was found not to be a case. 
  • Hydatid disease: Two laboratory confirmed cases of hydatid disease were notified in August 2011. Both cases were males in the 70+ years age group from Counties Manukau and Auckland DHBs. One case was a visitor from India and the other case was most likely a past infection. 
  • Leprosy: One probable case of leprosy was notified in August 2011. The case was a Fijian Indian female in the 70+ years age group. The case had been in Fiji during the incubation period.
  • Leptospirosis: 11 cases of leptospirosis (4 confirmed, 1 probable and 6 under investigation) were notified in August 2011 compared to six cases notified in the same month of the previous year. The cases were reported from Counties Manukau, Waikato, Hawke’s Bay, Whanganui, and Canterbury DHBs (2 cases each) and Auckland DHB (1 case).  Occupation was recorded in six cases: farmer (3 cases), freezing worker (2 cases), and cleaner (1 case). Four cases had reported having contact with farm animals prior to becoming ill. The Leptospira serovar was available for two of the 11 notified cases, L. Ballum was identified in both cases.
  • Measles: 44 cases of measles were notified in August 2011 (34 confirmed, 1 probable and 9 under investigation), compared to 62 cases notified in the previous month and six cases in the same month of the previous year (Figure 1). The remainder of this section relates to the 34 confirmed cases only. The cases were reported in Waitemata (13), Waikato (12), Auckland (5), and Counties Manukau (4) DHBs. Cases were distributed as follows: less than 1 year (1), 1-4 years (7), 5-9 years (6), 10-14 years (8), 15-19 years (8), 20-29 years (1), 30-39 years (2) and 40-49 years (1) age groups. Two hospitalisations were reported in the 1-4 years (1) and 30-39 years (1) age groups.  22 of the 26 cases for whom immunisation information was available had not been immunised. Of the four immunised cases, three had received one dose of vaccine (including two cases aged less than 4 years and therefore only eligible for one dose of vaccine) and the remaining case had received two doses of vaccine.
  • Meningococcal disease: 24 cases of invasive meningococcal disease were notified during August 2011 (20 were laboratory confirmed), compared to 14 cases notified in the previous month and 12 during the same month last year. Cases were distributed by DHB as follows: Counties Manukau (5), Northland and Waikato (4 cases each), Canterbury (3), Auckland and Southern (2 cases each), Hawke’s Bay, Lakes, Midcentral and Nelson Marlborough (one case each). The highest numbers of cases were in the less than 1 years (6), 1-4 years (5), and 40-49 years (4) age groups.  The cases were of European (10), Māori (8), Pacific Peoples (4), and Asian (1) ethnicities; ethnicity was unknown for the remaining case. Of the 20 laboratory confirmed cases the strain type was determined for 18 cases: C (9), epidemic strain (6), and B other (i.e. non-epidemic strain) (3).
  • Mumps: Eight cases of mumps were notified in August 2011 (3 confirmed, 2 probable, and 3 under investigation), compared to one case notified in the same month during 2010. The remainder of this section relates to the five confirmed or probable cases only.  The cases were reported in Northland (2 cases), Waitemata, Auckland, and Counties Manukau (1 case each) DHBs. The age distribution of the cases was as follows: less than 1 year (1), 1-4 years (2), 20-29 years (1), and 30-39 years (1) age groups. Immunisation information was recorded for three cases. Of these, one case was fully immunised, one had received one dose of vaccine, and one was not immunised. The immunisation status of the remaining two cases was unknown.
  • Rickettsial disease: One case of Q fever was notified in August 2011. The case was a male aged 40-49 years notified from Bay of Plenty DHB. The case was believed to be exposed while working in Australia.  The case is still under investigation but likely to be made not a case. 
  • Taeniasis: Three cases of taeniasis were notified in August 2011 (2 confirmed and 1 probable). Both confirmed cases (a female aged 10-14 years, and a male aged 20-29 years) were reported from Capital and Coast DHB and were in Ethiopia during the incubation period. The probable case (a male aged 40-49 years) was reported from Waikato DHB and had been in South Africa during the incubation period.
  • Yersiniosis: 88 yersiniosis cases were notified in August 2011, compared to 48 cases notified in the preceding month and 32 in August 2010. The highest numbers of cases were reported in Waikato (27), Waitemata (11), Auckland (9), Counties Manukau, Canterbury (7 cases each), and Lakes (6) DHBs. The cases were aged from 8 months to 84 years with the highest number of cases in the 50-59 years (15), 1-4 years and 40-49 years (12 cases each) age groups. Four cases were hospitalised. Biotyping results were available for 56 (63.6%) of cases. The most commonly identified biotypes were: Yersinia enterocolitica Biotype 2 (39 cases), Y. enterocolitica Biotype 4 (12 cases) and Y. enterocolitica Biotype 1A (4 cases).  Among the cases for which risk factor information was recorded, 44.8% (13/29) had contact with farm animals, 13.3% (4/30) had consumed untreated water during the incubation period, 12.5% (4/32) had contact with faecal matter, and 3.6% (1/28) had contact with a sick animal.

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Report:

Monthly Notifiable Disease Surveillance Report - Aug 2011

Tables:

Monthly National Totals - Aug 2011

Monthly DHB Totals - Aug 2011

Monthly Rolling Totals - Aug 2011

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Aug 2011

Tables:

Monthly National Totals - Aug 2011

Monthly DHB Totals - Aug 2011

Monthly Rolling Totals - Aug 2011

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