Monthly Notifiable Disease Surveillance Report - Oct 2011

Monday 23rd September 2019


Key notifiable disease trends

  • Hydatid disease: One probable case of hydatid disease from MidCentral DHB was notified in October 2011. The case was a European male in the 70+ years age group. The case had exposure to farm animals as a child.
  • Invasive pneumococcal disease: 51 cases of invasive pneumococcal disease were notified in October 2011, compared to 71 cases notified in the previous month and 34 cases in the same month of the previous year. The highest numbers of cases were reported in Canterbury (8) and Waikato (6) DHBs. Cases occurred in all age groups, with the highest number of cases occurring in the 70+ years age group (18 cases), followed by the 60-69 years (9 cases) and 50-59 years (7 cases) age groups. There were 39 hospitalisations and two deaths were reported. Of the cases where risk factor information was recorded, 59.4% (19/32) had a chronic illness, 39.3% (11/28) were immunocompromised, 28.0% (7/25) were current smokers, and 22.6% (7/31) had a chronic lung disease or cystic fibrosis.
  • Measles: 101 cases of measles were notified in October 2011 (89 confirmed, 11 probable, 1 under investigation), compared to 85 cases notified in the previous month and 2 cases in the same month of the previous year. The remainder of this section relates to the 89 confirmed and 11 probable cases only. The majority (61.0%) of the cases were reported in Auckland DHB. Cases were distributed by age group as follows: less than 1 year (9) 1-4 years (23), 5-9 years (6), 10-14 years (8), 15-19 years (11), 20-29 years (19), 30-39 years (18), and 40-49 years (6). There were 26 hospitalisations reported. Of the 67 cases where vaccination status was recorded, 47 cases were not vaccinated, including 14 cases aged less than 15 months and therefore not eligible for vaccination. Twenty cases had been vaccinated against measles with six cases reported having received two doses of vaccine, 13 cases having received one dose (including 8 cases less than 4 years old so only eligible for one dose), and no dose information was available for the remaining case.
  • Meningococcal disease: 11 cases of meningococcal disease were notified in October 2011, compared to 19 cases notified in the previous month and four cases in the same month of the previous year. Cases were distributed by DHB as follows: Northland (3), Taranaki (2), Bay of Plenty (2), Counties Manukau, Waikato, Tairawhiti, and Capital and Coast (1 each). The highest numbers of cases occurred in the 1-4 years and 5-9 years (3 each) age groups. Over 60% (7/11) of cases reported were of European ethnicity. There were 10 hospitalisations and no deaths reported. Of the 10 laboratory-confirmed cases, the strain type was determined for nine cases: epidemic strain (4), C (3), and B other (i.e. non-epidemic strain) (2).
  • Pertussis: 251 cases of pertussis were notified in October 2011, compared with 210 cases notified the previous month and 52 cases in the same month of the previous year. There were 88 (35.1%) laboratory-confirmed cases. The highest number of cases was reported in Nelson Marlborough (57) DHB, followed by West Coast (48) and Canterbury (44) DHBs. Cases occurred in all age groups, with the highest numbers in the 40-49 years (38), 1-4 years (31) and 10-14 years (30) age groups. The vaccination status was recorded for 150 (59.8%) of the cases. Of these, 53 were reported as not vaccinated (including four cases aged less than 6 weeks and therefore not eligible for vaccination), four received one dose of vaccine, three received two doses, 47 received three or more doses, and 43 reported has having been vaccinated but no dose information was available. Of the cases where relevant information was recorded, 53.7% (58/108) had contact with a laboratory-confirmed pertussis case and 44.6% (70/157) attended school, pre-school or childcare.
  • Rickettsial disease: One case of Q fever was notified in October 2011. The case has since been made “not a case” after further investigation.
  • Shigellosis: Nine cases of shigellosis were notified in October 2011 compared with eight cases notified in the previous month and four cases in the same month of the previous year. Cases occurred in the following DHBs: Auckland (3), Northland, Waitemata, Waikato, Lakes, Taranaki and Canterbury (1 each). The serotype involved was identified for eight of the cases: Shigella sonnei biotype g (4), S. flexneri 1 (2), and S. flexneri 2a (2). Overseas travel during the incubation period was recorded for two cases with one case reporting travel to Fiji and the other to Australia, South Africa and Zimbabwe.

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Report:

Monthly Notifiable Disease Surveillance Report - Oct 2011

Tables:

Monthly National Totals - Oct 2011

Monthly DHB Totals - Oct 2011

Monthly Rolling Totals - Oct 2011

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Oct 2011

Tables:

Monthly National Totals - Oct 2011

Monthly DHB Totals - Oct 2011

Monthly Rolling Totals - Oct 2011

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