Monthly Notifiable Disease Surveillance Report - Jun 2013

Monday 23rd September 2019


Key notifiable disease trends

Campylobacteriosis: 374 cases of campylobacteriosis were notified in June 2013 compared to 342 cases notified during the same month of the previous year (Figure 1). For the 12 month period ending 30 June 2013, the highest rates were in South Canterbury (284.7 per 100 000 population, 857 cases), West Coast (200.6 per 100 000 population, 66 cases), and Taranaki (194.0 per 100 000 population, 214 cases) DHBs compared to a national rate of 140.3 per 100 000. One interim Campylobacter outbreak was reported in June (case numbers yet to be determined).

Cryptosporidiosis: 67 cases of cryptosporidiosis were notified in June 2013 compared to 38 cases notified during the same month of the previous year. The cases ranged in age from six months to 75 years, with the highest number of cases in the 30-39 years (17 cases) age group followed by those in the 1-4 years (16 cases), and 5-9 years (10 cases) age groups. The highest numbers of cases were reported from Waitemata (21 cases), Canterbury (15 cases), and Auckland (8 cases) DHBs. Among the cases where risk factor information was recorded, 50.0% (11/22) had recreational contact with water, 39.1% (9/23) attended school, pre-school or childcare, 33.3% (7/21) had contact with faecal matter, 33.3% (6/18) had consumed food from a food premises and 20.0% (4/20) had contact with farm animals.  Eight Cryptosporidium outbreaks were reported in June, including seven finalised outbreaks (18 cases) and one interim outbreak (case numbers yet to be determined).

Hepatitis A: 9 cases of hepatitis A were notified in June 2013 compared to two cases in the same month of the previous year. Ethnicity was recorded for all cases and was distributed as follows: Māori (4 cases), Asian (3 cases) and European or Other (2 cases) ethnic groups. The highest numbers of cases were reported from Canterbury DHB (5 cases). The cases ranged in age from 14 months to 64 years with the highest number of cases in the 1-4 years age group (3 cases). Three of the cases had travelled overseas during the incubation period. Countries visited were Fiji, Singapore and Vanuatu.

Measles: One case of measles was notified in June 2013, the case has since been found to not meet case crtieria after further investigation.

Pertussis: 211 cases of pertussis were notified in June 2013 compared to 508 cases in the same month of the previous year (Figure 2). Nine cases were hospitalised and no deaths were reported. There were 28 (13.3%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 30 (14.2%) cases were laboratory-confirmed by PCR. The highest numbers of cases were reported from Nelson Marlborough (55 cases), Canterbury (27 cases), and Southern (22 cases) DHBs. The cases ranged in age from 15 days to 90 years, with 26.5% 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 (38 cases) followed by the 40-49 years (33 cases), and 30-39 years (27 cases) age groups. The vaccination status was recorded for 120 (56.9%) of cases. Of these, 36 were reported as not vaccinated, 10 received one dose of vaccine, four received two doses of vaccine, 53 received three or more doses (including four who had received all five doses), and 17 were reported as being vaccinated but no dose information was available. Of the cases where the relevant information was recorded 37.7% (57/151) attended school, pre-school or childcare, and 21.1% (20/95) had contact with a laboratory-confirmed pertussis case. One finalised B. pertussis outbreak was reported in June involving two cases.

Rickettsial disease:  One case of confirmed murine typhus (Rickettsia typhi) was notified in June 2013. The case was a male in the 60-69 years age group from Waitemata DHB and is thought to have acquired the disease locally through infected fleas.

Shigellosis: 16 cases of shigellosis were notified in June 2013, one of these cases has since been found to not meet case criteria after further investigation. Ten cases were notified in the same month of the previous year. The highest numbers of cases were reported from Auckland (7 cases), and Southern (3 cases) DHBs. The higehst number of cases occurred in the 20-29 years and 30-39 years age groups (4 cases each). The serotype involved was identified for all cases: Shigella sonnei biotype a (7), S. sonnei biotype g and S. flexneri (3 each), and S. flexneri 3a and S. flexneri 4a (1 each). Overseas travel during the incubation period was recorded for all cases of which eight did not travel. Countries visited included Cambodia, Fiji, Indonesia, Samoa, Singapore, South Africa, Thailand and Vietnam. One case had visited more than one country.

VTEC/STEC infection: 15 cases of VTEC/STEC infection were notified in June 2013, two of these cases have since been found to not meet case criteria after further investigation. Nine cases were notified in the same month of the previous year. The highest numbers of cases were reported from Southern (4 cases) and Waitemata (3 cases) DHBs. The highest numbers of cases occurred in the 1-4 years (4 cases) and 70 years and over age groups (3 cases). Four cases were hospitalised. 11 cases were confirmed by the Enteric Reference Laboratory as being infected with VTEC/STEC. The serotype was identified as O157:H7 (10 cases) and non-O157 (1 case). Among the cases for whom risk factor was recorded, 50.0% (3/6) had contact with animals, 40.0% (2/5) had consumed water from a non-habitual supply, and 33.3% (2/6) had attended school, pre-school or childcare. One finalised E. coli O157:H7 outbreak was reported in June involving two cases.

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Report:

Monthly Notifiable Disease Surveillance Report - Jun 2013

Tables:

Monthly National Totals - Jun 2013

Monthly DHB Totals - Jun 2013

Monthly Rolling Totals - Jun 2013

 

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Monthly Notifiable Disease Surveillance Report - Jun 2013

Tables:

Monthly National Totals - Jun 2013

Monthly DHB Totals - Jun 2013

Monthly Rolling Totals - Jun 2013

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