Monthly Notifiable Disease Surveillance Report - Jan 2012

Saturday 21st September 2019


Key notifiable disease trends

  •   Campylobacteriosis: 1001 Campylobacteriosis cases were notified in January 2012 compared to 549 cases notified in the same month of the previous year (Figure 1).  There were 828 (82.7%) laboratory-confirmed cases.  For the 12 month period ending 31 January 2012, the highest incidence rates were reported from Wairarapa (240.8 per 100 000 population, 97 cases), South Canterbury (239.9 per 100 000 population, 134 cases), Hawke's Bay (219.0 per 100 000 population, 340 cases) and Waikato (203.3 per 100 000 population, 741 cases) DHBs compared to a national rate of 163.6 per 100 000 population.  Three campylobacter outbreaks from Waikato DHB were notified including seven cases.
  • Enterobacter (Cronobacter) sakazakii: One laboratory-confirmed case of Enterobacter sakazakii invasive disease was notified in January 2012 from Auckland DHB. The case was in the 70 years and over age group. No further details are available.
  •  Leptospirosis: 16 cases of leptospirosis (8 confirmed, 3 probable, and 5 under investigation) were notified in January 2012 compared to two cases in the same month of the previous year.  The cases were from Waikato (5), Canterbury (3), Taranaki (2), and Hawke’s Bay, Bay of Plenty, Whanganui, Wairarapa, Nelson Marlborough, and West Coast (1 each) DHBs. High risk occupations were recorded for eight cases: including farmers (7) and freezing worker (1). Of the remaining eight cases, one case reported exposure to both livestock and pond water, and risk factor information was unknown for seven cases. The Leptospira serovar was identified for three cases, all were L. Hardjo.
  • Measles: 37 cases of measles were notified in January 2012 (28 confirmed, 5 probable, 4 under investigation), compared to 77 cases notified in the previous month and 10 cases in the same month of the previous year. The remainder of this section relates to the 28 confirmed and five probable cases only. The highest number of cases was reported in Counties Manukau DHB (20) followed by Waitemata (5), and Auckland and Capital and Coast (3 each) DHBs. Cases were distributed by age group as follows: less than 15 months (8), 15 months-3 years (8), 4-9 years (4), 10-19 years (9), 20-29 years and 30-39 years (1 each) , and 40+ years (2).  There were three hospitalisations reported. Of the 26 cases where vaccination status was recorded, 19 cases were not vaccinated, including eight cases aged less than 15 months. Seven cases had been vaccinated against measles with four cases reporting having received two doses of vaccine, and three cases having received only one dose.
  • Meningococcal disease: Seven cases of meningococcal disease were notified in January 2012 compared to five cases notified in the previous month and four cases in the same month of the previous year. Cases were distributed by DHB as follows: Counties Manukau, Waitemata and Taranaki (2 each), Waikato (1). Cases occurred in the less than 1 year (1), 10-14 years and 15-19 years (2 each), and 20-29 years and 30-39 years (1 each) age groups. The ethnic distribution was as follows, Pacific Peoples (4), European (2) and Other (1) ethnic groups. All seven cases were hospitalised but no deaths were reported.  Six of the 7 cases were laboratory confirmed and the strain type was determined for four cases: group B non-epidemic (3) and group C (1).
  •  Pertussis: 430 cases of pertussis were notified in January 2012, compared with 522 cases notified the previous month and 55 cases in the same month of the previous year. There were 86 (20.0%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 14 (3.3%) cases were laboratory-confirmed by PCR. The highest number of cases was reported in Nelson Marlborough DHB (113), followed by Canterbury (85), Capital and Coast (46), and Tairawhiti (27) DHBs. Cases occurred in all age groups, with 24.0% (103/430 cases) under 5 years old, including 36 cases aged less than 1 year. The highest numbers occurred in the 1-4 years (67), 40-49 years (61) and 5-9 years (60) age groups. The vaccination status was recorded for 253 (58.8%) of the cases. Of these, 74 were reported as not vaccinated (including two cases aged less than 6 weeks and therefore not eligible for vaccination), two received one dose of vaccine, four received two doses, 21 received three or more doses, and 152 were reported as having been vaccinated but no dose information was available. Of the cases where relevant information was recorded, 41.9% (91/217) had contact with a laboratory-confirmed pertussis case and 19.5% (56/287) attended school, pre-school or childcare.
  •  Rheumatic fever: 14 cases of rheumatic fever were notified in January 2012, compared to six cases during the same month last year. 13 cases were initial attacks of rheumatic fever, and 1 was a recurrent attack.  Of the 14 cases, 12 were hospitalised. All cases were notified from the North Island with the highest number of cases notified from Northland (4), Counties Manukau (3) and Lakes (2) DHBs. Cases were reported among Māori (12 cases), Pacific Peoples and Asian (1 case each)  ethnic groups.  Most cases (10 cases) were aged between 5 and 14 years.
  • Shigellosis: 12 cases of shigellosis were notified in January 2012 compared with nine cases notified in the previous month and eight cases in the same month of the previous year. Cases occurred in the following DHBs: Waitemata, Auckland, and Canterbury (3 cases each), Bay of Plenty (2), and Taranaki (1). The serotype involved was identified for 9 cases: Shigella sonnei biotype g (4), S. sonnei biotype a (3), and S. flexneri (2). Overseas travel during the incubation period was recorded for five cases. Countries visited or lived in were Samoa (3 cases), Singapore and India (1 case each).
  •  Yersiniosis: 47 cases of yersiniosis were notified in January 2012, compared to 32 cases notified in the previous month and 38 cases in the same month of the previous year (Figure 2). Canterbury DHB had the highest numbers of cases recorded (9 cases), followed by Waitemata (8), Auckland, Hawke's Bay and Waikato (5 cases each) DHBs. Cases occurred in all age groups, with the highest numbers reported in the 1-4 years (15), 20-29 years (9), and 30-39 years (5) age groups. Two cases were hospitalised. The biotype involved was identified in 36 (76.6%) of the cases, and the dominant biotypes were Yersinia enterocolitica biotype 4 (22), Y. enterocolitica biotype 2 (7), and Y. enterocolitica biotype 1A (4).  Among the cases for which risk factor information was recorded, 33.3% (3/9) consumed untreated water, 10.0% (1/10) had contact with farm animals, 55.6% (5/9) consumed food from a food premises, 33.3% (3/9) had contact with faecal material, and 50.0% (4/8) had contact with recreational water during the incubation period. 

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Report:

Monthly Notifiable Disease Surveillance Report - Jan 2012

Tables:

Monthly National Totals - Jan 2012

Monthly DHB Totals - Jan 2012

Monthly Rolling Totals - Jan 2012

 

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Monthly Notifiable Disease Surveillance Report - Jan 2012

Tables:

Monthly National Totals - Jan 2012

Monthly DHB Totals - Jan 2012

Monthly Rolling Totals - Jan 2012

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