Monthly Notifiable Disease Surveillance Report - Jul 2014

Saturday 21st September 2019


Key notifiable disease trends

Chikungunya fever: One probable case of chikungunya fever was notified in July 2014. The case was a female in the 30–39 years age group from Waitemata DHB. The case was in Tonga during the incubation period.

Campylobacteriosis: 380 cases of campylobacteriosis were notified in July 2014 compared to 524 cases notified during the same month of the previous year. For the 12 month period ending 31 July 2014, the highest DHB rates were in South Canterbury (338.5 per 100 000 population, 193), Hawke’s Bay (209.1 per 100 000 population, 325), and West Coast (205.2 per 100 000 population, 67) compared to a national rate of 155.8 per 100 000 population.

Cryptosporidiosis: 25 cases of cryptosporidiosis were notified in July 2014 compared to 78 cases notified during the same month of the previous year. The cases ranged in age from 13 months to 76 years, with the highest numbers of cases in the 1–4 years (6 cases) and 30–39 years (5 cases) age groups. The highest numbers of cases were reported from Waitemata (5 cases) and Waikato (4 cases) DHBs. Among the cases where risk factor information was recorded, 61.5% (8/13) had consumed food from a food premises, 54.5% (6/11) had contact with recreational water, 45.5% (5/11) had consumed untreated water, and 41.7% (5/12) had contact with farm animals.

Giardiasis: 157 cases of giardiasis were notified in July 2014 compared to 136 cases notified during the same month of the previous year (Figure 1). The highest numbers of cases were reported from Waikato (24 cases), Auckland (20 cases), Counties Manukau (17 cases) and Capital & Coast (16 cases) DHBs. Among the cases where risk factor information was recorded, 49.0% (24/49) had consumed food from a food premises, 39.3% (22/56) had contact with other symptomatic people, 37.5% (21/56) had contact with faecal matter, and 33.9% (20/59) had contact with recreational water. Nine Giardia outbreaks were reported in July, including eight finalised outbreaks (25 cases) and one interim outbreak (case numbers yet to be determined).

Hepatitis not otherwise specified (NOS): One confirmed case of hepatitis NOS was notified in July 2014. The case was a male in the 20–29 years age group from Counties Manukau DHB. The case, who was also a chronic hepatitis B carrier, was infected with hepatitis D.

Leptospirosis: 13 cases of leptospirosis were notified in July 2014 (8 confirmed and 5 under investigation), compared to six cases notified during the same month of the previous year. The following section relates to the eight confirmed cases only. These cases were from Hawke’s Bay (3 cases), Whanganui (2 cases), and Waikato, Taranaki and Southern (1 case each) DHBs. High risk occupations were recorded for six cases: farmers (4 cases) and meat-processing workers (2 cases).One case that did not report a high-risk occupation was overseas during the incubation period in Samoa (contact with pig and dog urine and swimming in a river). Leptospira species and serovars were recorded for five cases: Leptospira Hardjo (3 cases), and L. Ballum and L. Tarassovi (1 case each).

Listeriosis: Four cases of confirmed listeriosis (all non-perinatal) were notified in July 2014. The cases were from Waitemata, Auckland, Counties Manukau and Bay of Plenty DHBs and were distributed by age group as follows: 60–69 years (2 cases) and 70+ years (2 cases). One of the two cases that had risk factor information recorded had an underlying illness and was on immunosuppressive medication.

Measles: 39 cases of measles were notified in July 2014 (36 confirmed, 1 probable, and 2 under investigation), compared to zero cases notified during the same month of the previous year. The highest number of cases was reported from Waikato DHB (26 cases). Cases ranged in age from four months to 39 years, with the highest numbers of cases in the 10–14 years and 15–19 years (11 cases each) age groups. Three cases were hospitalised and no deaths were reported. Of the 33 cases with immunisation information, 18.2% (6/33) were recorded as being immunised. Four cases had received only one dose of the MMR vaccine and one case had received two doses. The remaining case had no dose information recorded. Of the cases for which risk factor information was recorded, 78.8% (26/33) reported contact with another measles case in the previous three weeks and 62.9% (22/35) attended school, pre-school or childcare. One interim measles outbreak was reported in July (case numbers yet to be determined).

Meningococcal disease: Four cases of meningococcal disease were notified in July 2014 compared to 14 in the same month of the previous year (Figure 2). The cases were from Canterbury (2 cases), Waitemata and Waikato (1 case each) DHBs and were distributed by age group as follows: 20–29 years (2 cases), 1–4 years and 40–49 years (1 case each). All cases were hospitalised and no deaths were reported. Three cases were laboratory confirmed and the strain type was determined for all cases as group B including one B:P1.7-2,4.

Pertussis: 101 cases of pertussis were notified in July 2014 (27 confirmed, 49 probable, 6 suspect and 19 under investigation) compared to 294 cases in the same month of the previous year. Of the 85 cases with hospitalisation status recorded, nine (10.6%) cases were hospitalised. The highest numbers of cases were reported from Waitemata (17 cases), Counties Manukau (13 cases), and Auckland (12 cases) DHBs. Ethnicity was recorded for 82 (81.2%) cases. The cases were distributed by ethnic groups as follows: European or Other (53 cases), Māori (16 cases), Pacific Peoples (8 cases), Asian (4 cases) and MELAA (1 case). The cases ranged in age from one month to 90 years, with the highest numbers of cases in the 30–39 years (18 cases) and the 60–69 years (15 cases) age groups. The vaccination status was recorded for 42 (41.6%) cases. Of these, 24 were reported as not vaccinated, five received one dose of vaccine, six received three or more doses, and seven were reported as being vaccinated but no dose information was available.

Rheumatic fever: Based on the earliest date available, 19 cases of rheumatic fever (17 initial attacks and 2 recurrent attacks) were notified in July 2014 compared to seven cases in the same month of the previous year. All cases were hospitalised. All cases were notified from the North Island with the highest number of cases notified from Counties Manukau DHB (10 cases). Ethnicity was reported for all cases with the highest number of cases in Māori (10 cases), followed by Pacific Peoples (9 cases) ethnic groups. The cases ranged in age from five years to 31 years, with the highest number of cases in the 15–19 years age group (6 cases).

Ross River virus infection: One confirmed case of Ross River virus infection was notified in July 2014. The case was a female in the 60–69 years age group from Canterbury DHB. The case visited Australia, New Caledonia and Vanuatu during the incubation period.

Taeniasis: Two confirmed cases of taeniasis were notified in July 2014. Both cases were female in the 20–29 years and the 50–59 years age groups. The cases were from Counties Manukau and Canterbury DHBs. One case was in Ethiopia and the other in Laos during the incubation period.

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Report:

Monthly Notifiable Disease Report - Jul 2014

Tables:

Monthly National Totals - Jul 2014

Monthly DHB Totals - Jul 2014

Monthly Rolling Totals - Jul 2014

 

DOWNLOADS

Monthly Notifiable Disease Report - Jul 2014

Tables:

Monthly National Totals - Jul 2014

Monthly DHB Totals - Jul 2014

Monthly Rolling Totals - Jul 2014

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