Monthly Notifiable Disease Surveillance Report - Aug 2012

Wednesday 18th September 2019


Key notifiable disease trends

  • Brucellosis: One case of brucellosis was notified in August 2012 from Waikato DHB. The case has been made “not a case” as the laboratory criteria were not met.
  • Cryptosporidiosis: 96 cases of cryptosporidiosis were notified in August 2012 compared to 57 cases notified during the same month of the previous year (Figure 1). The cases ranged in age from nine months to 71 years, with the highest numbers of cases in the 1-4 years (38 cases) and in the 5-9 years (14 cases) age groups. The highest numbers of cases were reported in Waikato (34 cases) and Hawke’s Bay and Capital and Coast (9 cases each) DHBs. Among the cases where risk factor information was recorded, 60.9% (28/46) had contact with farm animals, 46.9% (15/32) had consumed untreated water, 45.5% (15/33) had contact with other symptomatic people, and 45.0% (18/40) had attended school, preschool or childcare.
  • Haemophilus influenzae type b: Four cases of Haemophilus influenzae type b were notified in August 2012 including two cases still under investigation and two cases which have since been made “not a case” after further investigation. The two under investigation cases were in the 20-29 years and 40-49 years age groups. The vaccination history was recorded for the case in the 20-29 years age group, receiving three doses.
  •   Leprosy: One confirmed case of leprosy was notified in August 2012. The case was a male in the 20-29 years age group. The case had been in Kiribati during the incubation period.
  • Leptospirosis: 25 cases of leptospirosis were notified in August 2012 (11 confirmed, 4 probable and 10 under investigation), compared to five cases notified in the same month of the previous year. Two of these cases have since been made “not a case” after further investigation. The following section relates to the 11 confirmed cases only. These cases were from Waikato and Bay of Plenty (3 cases each), MidCentral (2 cases), and Hawke’s Bay, Wairarapa and South Canterbury (1 case each) DHBs. High risk occupations were recorded for all cases: farmers or farm workers (6), meat workers (3), hunting guide (1) and veterinarian (1). Leptospira species and serovars were recorded for six cases: Leptospira borgpetersenii sv Ballum, L. borgpetersenii sv Hardjo, and L. interrogans sv Pomona (2 each).
  • Meningococcal disease: 18 cases of meningococcal disease were notified in August 2012 compared to 23 cases notified in the same month of the previous year. One case has since been made “not a case” after further investigation. The cases ranged in age from nine months to 57 years, with the highest numbers of cases in the 15-19 years (5 cases) and in the 20-29 years (4 cases) age groups. Cases were from the following DHBs: Capital and Coast and South Canterbury (3 cases each), Waitemata, Auckland, MidCentral, Canterbury and Southern (2 cases each) and Waikato and Whanganui (1 case each). Fourteen cases were hospitalised but no deaths were reported. All of the cases were laboratory confirmed and the strain type was determined for 15 cases: group B but not B:P1.7-2,4 (6 cases), C:P1.5-1,10-8 (5 cases), B:P1.7-2,4 (2 cases), and group C but not C:P1.5-1,10-8 (2 cases).
  • Pertussis: 620 cases of pertussis were notified in August 2012, compared with 457 cases notified the previous month and 119 cases in the same month of the previous year (Figure 2). Nineteen cases were hospitalised and one death was reported. There were 86 (13.9%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 115 (18.5%) cases were laboratory-confirmed by PCR. The highest number of cases was from Canterbury DHB (128), followed by Capital and Coast (103) and Nelson Marlborough (69) DHBs. The cases ranged in age from one month to 86 years, with 23.2% (144/620 cases) under 5 years old (including 38 cases aged less than 1 year). The highest numbers of cases occurred in the 1-4 years (106), 5-9 years (93), 40-49 years (70), and 10-14 years (62) age groups. The vaccination status was recorded for 342 (55.2%) cases. Of these, 111 were reported as not vaccinated, 29 received one dose of vaccine, 10 received two doses of vaccine, 139 received three or more doses (including 27 who had received all five doses), and 53 were reported as being vaccinated but no dose information was available. Of the cases where the relevant information was recorded, 46.0% (186/404) attended school, pre-school or childcare, and 33.7% (91/270) had contact with a laboratory-confirmed pertussis case. Four B. pertussis outbreaks involving 10 cases in total were reported in August.
  • Rickettsial disease: One confirmed case of murine typhus was notified in August 2012. The case was a female in the 20-29 years age group from Waikato DHB. The case had exposure to rats and fleas.
  • Taeniasis: One confirmed case of taeniasis was notified in August 2012. The case was a male in the 50-59 years age group from Auckland DHB and was in South Africa during the incubation period.

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Report:

Monthly Notifiable Disease Surveillance Report - Aug 2012

Tables:

Monthly National Totals - Aug 2012

Monthly DHB Totals - Aug 2012

Monthly Rolling Totals - Aug 2012

 

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Monthly Notifiable Disease Surveillance Report - Aug 2012

Tables:

Monthly National Totals - Aug 2012

Monthly DHB Totals - Aug 2012

Monthly Rolling Totals - Aug 2012

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