Monthly Notifiable Disease Surveillance Report - May 2013

Thursday 19th September 2019


Key notifiable disease trends

Brucellosis: One confirmed case of brucellosis was notified in May 2013. The case was a male in the 50-59 years age group from Auckland DHB and was in Tonga during the incubation period.

Chemical poisoning from the environment: One case of chemical poisoning still under investigation was notified in May 2013. The case was a female in the 50-59 years age group from Counties Manukau DHB who used an insecticide inside and outside the house.

Cryptosporidiosis: 133 cases of cryptosporidiosis were notified in May 2013 compared to 47 cases notified during the same month of the previous year (Figure 1). The cases ranged in age from eight months to 83 years, with the highest number of cases in the 1-4 years (34 cases) age group followed by those in the 30-39 years (25 cases), and 5-9 years (19 cases) age groups. The highest numbers of cases were reported from Capital & Coast (24 cases), Waikato (19 cases), and Waitemata (18 cases) DHBs. Among the cases where risk factor information was recorded, 49.2% (31/63) had recreational contact with water, 32.2% (19/59) had contact with other symptomatic people, 30.4% (17/56) had contact with faecal matter, 27.3% (15/55) had consumed food from a food premises and 26.1% (18/69) attended school, pre-school or childcare.  Eight Cryptosporidium outbreaks were reported in May, including six finalised outbreaks (19 cases) and two interim outbreaks (case numbers yet to be determined).

Dengue fever: 14 cases of dengue fever were notified in May 2013 compared to five cases during the same month of the previous year. All of the cases had travelled overseas during the incubation period, and the countries visited were Indonesia (5 cases), Fiji, Papua New Guinea, Singapore and Thailand (2 cases each), and Australia, Malaysia, and Solomon Islands (1 case each). Some cases visited more than one country.

Leprosy: Two cases of leprosy were notified in May 2013. Both cases were overseas during the incubation period one each in Kiribati and Samoa.

Mumps
: Six cases of mumps were notified in May 2013, two of these cases have since been found to not meet case criteria after further investigation. This compares to one case in the same month of the previous year. Cases were from Northland and Bay of Plenty DHBs (2 cases each). The cases ranged in age from 11 months to 12 years, with the majority of cases being under 10 years (3 cases) of age. Ethnicity was recorded for all but one case as follows, European or Other (2 cases) and Māori (1 case) ethnic groups. Of the three cases where vaccination status was recorded, two cases had been vaccinated against mumps with one case having only received one dose of vaccine, and the other reported having been vaccinated, but no dose information was available.

Pertussis: 304 cases of pertussis were notified in May 2013 compared to 545 cases in the same month of the previous year (Figure 2). Seven cases were hospitalised and no deaths were reported. There were 63 (20.7%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 43 (14.1%) cases were laboratory-confirmed by PCR. The highest numbers of cases were reported from Nelson Marlborough (52 cases), Canterbury (50 cases), and Auckland (26 cases) DHBs. The cases ranged in age from 25 days to 88 years, with 21.8% under 5 years old (including 18 cases aged less than 1 year). The highest number of cases occurred in the 1-4 years age group (48 cases) followed by the 40-49 years (42 cases), and 30-39 years (39 cases) age groups. The vaccination status was recorded for 166 (54.6%) of cases. Of these, 65 were reported as not vaccinated, 16 received one dose of vaccine, three received two doses of vaccine, 58 received three or more doses (including 10 who had received all five doses), and 24 were reported as being vaccinated but no dose information was available. Of the cases where the relevant information was recorded 37.3% (81/217) attended school, pre-school or childcare, and 35.6% (42/118) had contact with a laboratory-confirmed pertussis case. Two B. pertussis outbreaks were reported in May, including one finalised outbreak (3 cases) and one interim outbreak (case numbers yet to be determined).

Rickettsial disease:  One case of rickettsial disease, scrub typhus, was notified in May 2013. The case was a male in the 60-69 years age group from Waikato DHB and was in Indonesia during the incubation period.

Taeniasis
: One confirmed case of taeniasis was notified in May 2013. The case was a female in the 20-29 years age group from Counties Manukau DHB and was in Afghanistan during the incubation period.

VTEC/STEC infection
: 35 cases of VTEC/STEC infection were notified in May 2013, two of these cases have since been found to not meet case criteria after further investigation. Seven cases were notified in the same month of the previous year. The highest numbers of cases was reported from Waitemata (9 cases), Auckland (5 cases), and Canterbury (4 cases) DHBs. The highest number of cases occurred in the 1-4 years age group (14 cases). Fifteen cases were hospitalised of which two had haemolytic uraemic syndrome. 32 cases were confirmed by the Enteric Reference Laboratory as being infected with VTEC/STEC. The serotype was identified as O157:H7 (29 cases) and non-O157 (3 cases). Among the cases for whom risk factor was recorded, 72.7% (8/11) had contact with animals, 50.0% (5/10) had consumed water from a non-habitual supply, and 41.7% (5/12) had attended school, pre-school or childcare. Two finalised E. coli O157:H7 outbreaks were reported in May involving eight cases.

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Report:

Monthly Notifiable Disease Surveillance Report - May 2013

Tables:

Monthly National Totals - May 2013

Monthly DHB Totals - May 2013

Monthly Rolling Totals - May 2013

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - May 2013

Tables:

Monthly National Totals - May 2013

Monthly DHB Totals - May 2013

Monthly Rolling Totals - May 2013

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