Monthly Notifiable Disease Surveillance Report - Oct 2012

Friday 20th September 2019


Key notifiable disease trends

  • Campylobacteriosis: 660 campylobacteriosis cases were notified in October 2012 compared to 546 cases notified in the same month of the previous year. For the 12 month period ending 31 October 2012, the highest rates were in South Canterbury (328.1 per 100 000 population, 185 cases), West Coast (251.8 per 100 000 population, 83 cases), and Canterbury (229.0 per 100 000 population, 1151) DHBs compared to a national rate of 166.4 per 100 000. Three Campylobacter outbreaks involving 10 cases in total were reported in October.   

  • Cryptosporidiosis: 188 cases of cryptosporidiosis were notified in October 2012 compared to 127 cases notified during the same month of the previous year. The cases ranged in age from seven months to 77 years, with the highest numbers of cases in the 1-4 years (62 cases) and in the 5-9 years (29 cases) age groups. The highest numbers of cases were reported in Waikato (40 cases), Canterbury (25 cases), and Southern (22 cases) DHBs. Among the cases where risk factor information was recorded, 77.2% (78/101) had contact with farm animals, 50.6% (41/81) had consumed untreated water, and 43.1% (47/109) had attended school, preschool or childcare. Seven cryptosporidiosis outbreaks involving 22 cases in total were reported in October.

  • Leptospirosis: 14 cases of leptospirosis were notified in October 2012 (5 confirmed, 3 probable and 6 under investigation), compared to six cases notified in the same month of the previous year. The following section relates to the five confirmed cases only. These cases were from Hawke’s Bay (2 cases), and Waikato, Wairarapa and Canterbury (1 case each). High risk occupations were recorded for four cases. Three cases were farmers or farm workers and one case was a livestock truck driver. The remaining case had contact with rat urine at a rural residence. Leptospira species and serovars were recorded for four cases: Leptospira interrogans sv Pomona (2), L. borgpetersenii sv Ballum (1), and L. borgpetersenii sv Tarassovi (1).

  • Pertussis: 551 cases of pertussis were notified in October 2012, compared with 570 cases notified the previous month and 239 cases in the same month of the previous year (Figure 1). Forty-three cases were hospitalised and no deaths were reported. There were 151 (27.4%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 99 (18.0%) cases were laboratory-confirmed by PCR. The highest number of cases was from Canterbury DHB (121), followed by Capital and Coast (53) and Nelson Marlborough (48) DHBs. The cases ranged in age from 8 days to 89 years, with 22.5% (124/551 cases) under 5 years old (including 46 cases aged less than 1 year). The highest numbers of cases occurred in the 1-4 years (78), 5-9 years and 40-49 years (76 each), and 30-39 years (56) age groups. The vaccination status was recorded for 293 (53.2%) cases. Of these, 114 were reported as not vaccinated, 23 received one dose of vaccine, eight received two doses of vaccine, 103 received three or more doses (including 18 who had received all five doses), and 45 were reported as being vaccinated but no dose information was available. Of the cases where the relevant information was recorded, 39.5% (145/367) attended school, pre-school or childcare, and 33.3% (74/222) had contact with a laboratory-confirmed pertussis case. Three B. pertussis outbreaks involving 13 cases in total were reported in October.

  • Salmonellosis: 92 cases of salmonellosis were notified in October 2012, compared with 85 cases notified in the previous month and 63 cases in the same month of the previous year.  The highest number of cases was reported in the Auckland region (23 cases), followed by Southern DHB (22 cases). The cases ranged in age from three months to 91 years, with the highest number of cases in the 1-4 years (20) and in the 20-29 years (17) age groups. Nine cases were hospitalised. The serotype involved was recorded for 87 (94.6%) cases. The most common serotypes were: Salmonella Typhimurium phage type 135 (8 cases), S. Brandenburg and S. Typhimurium phage type 160 (7 cases each), and S. Typhimurium phage type RDNC-May 06 (5 cases). One Salmonella outbreak involving five cases was reported in October.

  • Yersiniosis: 51 cases of yersiniosis were notified in October 2012, compared with 45 cases notified in the previous month and 30 cases in the same month of the previous year (Figure 2). Capital and Coast DHB had the highest number of cases (8 cases), followed by Counties Manukau (6 cases), and Waitemata, Auckland and Bay of Plenty (5 cases each) DHBs. The cases ranged in age from seven months to 79 years, with the highest numbers reported in the 50-59 years (11), 1-4 years (10), and 40-49 years (7) age groups. Two cases were hospitalised. The biotype involved was identified in 44 (86.2%) of the cases: Yersinia enterocolitica biotype 4 (16 cases), Y. enterocolitica biotype 2 (10 cases), Y. enterocolitica biotype 1A (9 cases), Y. enterocolitica biotype 3 (8 cases), and Y. pseudotuberculosis (1 case). Among the cases for which risk factor was recorded, 52.9% (9/17) had contact with farm animals, 42.9% (6/14) consumed food from a food premises, 42.1% (8/19) had attended school, pre-school or childcare during the incubation period, and 33.3% (5/15) had contact with faecal matter.

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Report:

Monthly Notifiable Disease Surveillance Report - Oct 2012

Tables:

Monthly National Totals - Oct 2012

Monthly DHB Totals - Oct 2012

Monthly Rolling Totals - Oct 2012

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Oct 2012

Tables:

Monthly National Totals - Oct 2012

Monthly DHB Totals - Oct 2012

Monthly Rolling Totals - Oct 2012

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