Monthly Notifiable Disease Surveillance Report - Oct 2013

Friday 20th September 2019


Key notifiable disease trends

Barmah Forest virus infection: One case of Barmah Forest virus infection was notified in October 2013, the case has since been found to not meet case criteria after further investigation.

Diphtheria: One case of diphtheria was notified in October 2013, the case has since been found to not meet case criteria after further investigation.

Hepatitis A: 16 cases of hepatitis A were notified in October 2013 compared to two cases in the same month of the previous year. Ethnicity was recorded for 87.5% (14/16) of the cases, with the highest number of cases in European or Other (8 cases), followed by Māori (4 cases), and Asian (2 cases) ethnic groups. The cases were reported from Hawke’s Bay and Canterbury (4 cases each), Auckland (3 cases), Counties Manukau (2 cases), and Northland, Capital & Coast, and Nelson Marlborough (1 case each) DHBs. The cases ranged in age from five to 83 years and were in the following age groups: 5-9 and 30-39 years (4 cases each), 20-29 years (3 cases), 10-14 and 50-59 years (2 cases each), 70 years and over (1 case). Six of the cases had travelled overseas during the incubation period: one travelled to both Australia and Fiji and the others to Australia, Fiji, and Vanuatu. One interim hepatitis A virus outbreak was reported in October (case numbers yet to be determined).

Measles: Three cases of measles were notified in October 2013, two of these cases have since been found to not meet case criteria after further investigation. The remaining probable case was a male in the <1 year age group from Canterbury DHB.

Pertussis: 259 cases of pertussis were notified in October 2013 compared to 537 cases in the same month of the previous year (Figure 1). Twenty three cases were hospitalised. One death was reported from Counties Manukau DHB. The case was a male in the 70 years and over age group with multiple co-morbidities. The public health unit was unable to ascertain whether or not pertussis was the primary cause of death. There were 56 (21.6%) cases laboratory-confirmed by isolation of Bordetella pertussis from the nasopharynx. A further 19 (7.3%) cases were laboratory-confirmed by PCR. The highest numbers of cases were reported from Canterbury (48 cases), Counties Manukau (35 cases), and Nelson Marlborough (29 cases) DHBs. The cases ranged in age from 26 days to 86 years, with 18.5% under five years old (including 20 cases aged less than 1 year). The highest numbers of cases occurred in the 40-49 years (40 cases), 30-39 years (32 cases), and 1-4 years (28 cases) age groups. The vaccination status was recorded for 113 (43.6%) of cases. Of these, 48 were reported as not vaccinated, 10 received one dose of vaccine, 41 received three or more doses (including nine who had received all five doses), and 14 were reported as being vaccinated but no dose information was available. Of the cases where relevant information was recorded 34.1% (29/85) had contact with a laboratory-confirmed pertussis case, and 32.4% (55/170) attended school, pre-school or childcare.

Q fever: One case of Q fever was notified in October 2013, the case has since been found to not meet case criteria after further investigation.

Rheumatic fever: Based on the earliest data available, 17 cases of rheumatic fever (15 initial attacks, 2 recurrent attacks) were notified in October 2013 compared to three cases notified during the same month of the previous year. Of the 16 cases with hospitalisation status recorded, 93.8% (15 cases) were hospitalised. All but one case was notified from the North Island with the highest number of cases notified from Counties Manukau DHB (7 cases). Ethnicity was reported for all cases with the highest number of cases in Māori (11 cases), followed by Pacific Peoples (5 cases), and European or Other (1 case) ethnic groups. The cases ranged in age from seven years to 29 years, with the highest number of cases in the 10-14 years (8 cases) age group.

Ross River virus infection: One confirmed case of Ross River virus infection was notified in October 2013. The case was a male in the 60-69 years age group from Waitemata DHB and was in Australia during the incubation period.

Salmonellosis: 102 cases of salmonellosis were notified in October 2013 compared to 91 cases notified in the same month of the previous year (Figure 2). The highest number of cases was reported from the Auckland region (36 cases), followed by Southern (18 cases), and Canterbury (8 cases) DHBs. The cases ranged in age from three months to 84 years, with the highest numbers of cases in the 1-4 years (16 cases), 20-29 years (15 cases), and the 50-59 years (11 cases) age groups. Thirteen cases were hospitalised. The serotype involved was recorded for 101 cases (99.0%) cases. The most common serotypes were: Salmonella Brandenburg and S. Typhimurium phage type 56 variant (11 cases each), and S. Enteritidis phage type 1 and S. Typhimurium phage type 135 (6 cases each). One finalised Salmonella outbreak was reported in October (4 cases).

Note: Click on the document links below to open. These documents are in PDF format. You will need to download the free Adobe Acrobat Reader to view them.

Report:

Monthly Notifiable Disease Surveillance Report - Oct 2013

Tables:

Monthly National Totals - Oct 2013

Monthly DHB Totals - Oct 2013

Monthly Rolling Totals - Oct 2013

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Oct 2013

Tables:

Monthly National Totals - Oct 2013

Monthly DHB Totals - Oct 2013

Monthly Rolling Totals - Oct 2013

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