Monthly Notifiable Disease Surveillance Report - Feb 2021

Wednesday 19th May 2021


Key Notifiable Disease Trends

Overall decrease in notifications: There was a decrease in the incidence of most notifiable diseases in February 2021, compared with February 2020. This is most likely due to behavioural changes as a result of public health messaging about the COVID-19 pandemic, and the dramatic reduction in overseas travel.

Brucellosis: A case of brucellosis was reported in February 2021. The case, a male aged over 70 years, was a pig farmer from Tonga who arrived in New Zealand in February 2020. The case was confirmed as Brucella suis which is found in pigs and has been associated with a prolonged incubation period.

COVID-19: There were 76 cases of COVID-19 reported in February 2021 (74 confirmed and 2 under investigation). Of the 74 confirmed cases, 57 (77.0%) were cases in managed isolation/quarantine (MIQ) facilities at the time of diagnosis, 15 were community cases that were linked to an outbreak associated with Papatoetoe High School (see the following section for more details) and one was linked to the outbreak reported in the January monthly report. Two cases were hospitalised, and one MIQ death was reported. More information can be found on the ESR COVID-19 dashboard.

Dengue fever: Three cases of dengue fever were reported in February 2021. One case was hospitalised. All three cases had recently arrived from the Cook Islands where a dengue type 2 outbreak was declared on 2 February 2021. Border restrictions were eased on 21 January 2021 to allow quarantine-free travel from the Cook Islands to New Zealand.

Tetanus: A case of tetanus was reported in February 2021. The case was a male aged over 70 years who lived on a rural property. He was hospitalised and was confirmed based on clinical presentation. His vaccination status was unknown.

Tuberculosis disease: There were 31 cases of tuberculosis reported in February 2021, bringing the total for the year to date to 65 (41 confirmed, 4 probable and 20 under investigation), compared with 36 for the same period in 2020. Of the 45 confirmed and probable cases, 44 were new cases and one was a reactivation; 25 cases were pulmonary and 20 were extrapulmonary, and 28 (62.2%) were of Asian ethnicity.

 

OUTBREAKS

COVID-19: An outbreak of COVID-19 involving 15 cases associated with Papatoetoe High School was reported in February 2021. The first three cases were from the same household, including one who was a student at Papatoetoe High School. Whole genome sequencing confirmed the UK variant, B.1.1.7. A further 12 cases from three additional households were identified, four of which were students at Papatoetoe High School.

Salmonella Enteritidis: An increase in Salmonella Enteritidis ST183 involving 28 cases was identified in February 2021. Sequencing results showed that the 28 cases were genetically clustered. Cases were predominantly in the South Island (Canterbury 18, Nelson Marlborough 4, Capital & Coast 3, South Canterbury 2, and Southern 1). Seven cases were hospitalised. No epidemiological link to a common source was identified.

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 - Feb 2021

Tables:

Monthly National Tables - February 2021 (.xlsx)

Monthly DHB Tables - February 2021 (.xlsx)

Monthly Rolling Tables - February 2021 (.xlsx)

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Feb 2021

Tables:

Monthly National Tables - February 2021 (.xlsx)

Monthly DHB Tables - February 2021 (.xlsx)

Monthly Rolling Tables - February 2021 (.xlsx)

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