Monthly Notifiable Disease Surveillance Report - Feb 2018

Saturday 21st September 2019


Key notifiable disease trends

Cryptosporidiosis: 182 notifications in February 2018, a significant increase from the same month in 2017 (43 cases). The highest number of cases were reported from Capital & Coast DHB (42 cases). Over half of the cases from Capital & Coast were linked to an outbreak with exposure to a splash pad (water play area).

Dengue fever: 55 notifications in February 2018, a significant increase from the same month in 2017 (12 cases) (Figure 1). The majority of cases had travelled to Tonga and Samoa where there are currently outbreaks of dengue fever (Denv-2).

Meningococcal disease: 6 notifications in February 2018, a non-significant increase from the same month in 2017 (1 case). Five cases were laboratory confirmed. The strain types were identified as group B (3 cases, including B:P1.7-2,4 (1 case)), group W (1 case), and group Y (1 case). Strain type B:P1.7-2.4 was previously known as the ‘NZ epidemic strain’.

Mumps: 70 notifications in February 2018, a significant increase from the same month in 2017 (20 cases) (Figure 2). The majority of cases were reported from the Auckland region (41 cases, 58.6%). The monthly number of notifications have decreased from the peak of 276 cases reported in October 2017.

Pertussis: 432 notifications in February 2018, a significant increase from the same month in 2017 (113 cases) (Figure 3).

From 1 January–28 February 2018, the highest rates were in the <1 year (87.5 per 100,000) and 1–4 years (55.0) age groups. A national outbreak is ongoing.

STEC: 145 notifications in February 2018, a significant increase from the same month in 2017 (48 cases) (Figure 4). This increase has been ongoing since early 2016 and is partly due to changes in laboratory testing practices, with increasingly sensitive assays used for the detection of STEC.

Typhoid fever: 8 notifications in February 2018, a non-significant increase from the same month in 2017 (3 cases). Five cases were overseas during the incubation period: Samoa and India (2 cases each) and Fiji (1 case).

Yersiniosis: 127 notifications in February 2018, a significant increase from the same month in 2017 (67 cases). This increase is partly due to changes in laboratory testing practices since mid-2017, with increasingly sensitive assays used for the detection of Yersinia, although this does not account for all of the increase.

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Report:

Monthly Notifiable Disease Surveillance Report - Feb 2018

Tables:

Monthly National Totals - February 2018

Monthly DHB Totals - February 2018

Monthly DHB Rolling Totals - February 2018

 

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Monthly Notifiable Disease Surveillance Report - Feb 2018

Tables:

Monthly National Totals - February 2018

Monthly DHB Totals - February 2018

Monthly DHB Rolling Totals - February 2018

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