Monthly Notifiable Disease Surveillance Report - May 2020

Sunday 1st November 2020


Key Notifiable Disease Trends

Overall decrease in notifications: There was a decrease in the incidence of most notifiable diseases in May 2020, compared with May 2019. This is most likely due to behavioural changes as a result of public health messaging about the COVID-19 pandemic, and the national lockdown which began on 25 March. It is likely that exposure to some risk factors decreased during this time, but also that less people sought healthcare and therefore were not tested for many diseases.

COVID-19: There were 23 cases of COVID-19 (15 confirmed, 4 probable, 2 suspect and 2 under investigation) reported in May 2020. The following analysis is restricted to the 19 confirmed and probable cases. The majority of cases (14/19, 73.7%) were reported from the Auckland region. Seventeen (89.5%) cases were associated with outbreaks. Three cases were hospitalised, and no deaths were reported. More information can be found on the ESR COVID-19 dashboard.

OUTBREAKS

Botulism: An outbreak of botulism was reported in May 2020 from Bay of Plenty DHB, involving four people who consumed home-preserved sea snails. All four cases were admitted to hospital. Botulism was confirmed in clinical samples and the leftover home-preserved shellfish.

Ciguatera fish poisoning: An outbreak of ciguatera fish poisoning was reported in May 2020 from Canterbury DHB, involving five people. The cases purchased and ate camouflage grouper (kawakawa) which was imported from Fiji. MPI issued a statement on 27 May, warning the public not to consume frozen kawakawa purchased from Krazy Price Mart Ltd in Christchurch between 10 May and 21 May 2020.

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 - May 2020

Tables:

Monthly National Tables - May 2020 (.xlsx)

Monthly DHB Tables - May 2020 (.xlsx)

Monthly Rolling Tables - May 2020 (.xlsx)

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - May 2020

Tables:

Monthly National Tables - May 2020 (.xlsx)

Monthly DHB Tables - May 2020 (.xlsx)

Monthly Rolling Tables - May 2020 (.xlsx)

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