Monthly Notifiable Disease Surveillance Report - Mar 2020

Tuesday 26th May 2020


Key Notifiable Disease Trends

COVID-19: There were 744 cases of COVID-19 (668 confirmed and 76 probable) reported in March 2020. The majority of cases were reported from the Auckland region (262/744, 35.2%), followed by Waikato (108/744, 14.5%) and Southern (100/744, 13.4%) DHBs. The highest number of cases was in the 20–29 years age group (190, 25.5%). Over half (397/689, 57.6%) of the cases where overseas travel information was reported, had travelled overseas during the incubation period. Thirty-six cases (4.8%) were hospitalised, and two cases aged over 70 years died. More information can be found on the ESR COVID-19 dashboard.

Legionellosis: There were 15 cases of legionellosis (8 confirmed and 7 under investigation) notified in March 2020, compared with five for the same month in 2019. Six cases that were under investigation have since been made 'not a case'. The serogroup was identified in seven confirmed cases: three were due to Legionella longbeachae, three were due to L. pneumophila, and one was due to L. sainthelensi. One death was reported in a case aged over 70 years.

Mumps: There were 23 cases (19 confirmed, 3 probable and 1 under investigation) of mumps notified in March 2020, compared with eight for the same month in 2019. The majority of cases were reported from the Auckland region (13/23, 56.5%) and Southern DHB (7/23, 30.4%). Over two thirds (16/23, 69.6%) of cases were aged 15–29 years. One new mumps outbreak was reported from Southern DHB and there were two ongoing outbreaks in the Auckland region.

Paratyphoid fever: There were nine cases of paratyphoid fever notified in March 2020, compared with one for the same month in 2019. One case, due to Salmonella Paratyphi B var Java, has since been re-classified as salmonellosis. The remaining eight cases were identified as Salmonella Paratyphi A. Six cases had travelled to India during the incubation period and two had a prior travel history to Southeast Asia.

Yersiniosis: There were 96 cases (92 confirmed and 4 under investigation) of yersiniosis notified in March 2020, compared with 88 for the same month in 2019. The highest number of cases were reported from the Auckland region (32/96, 33.3%), and Canterbury (15/96, 15.6%), and Waikato (11/96, 11.5%) DHBs. Over half (37/62, 59.7%) of the cases that were serotyped, were due to Yersinia enterocolitica biotype 2/3 serotype O:9. No outbreaks were reported.

OUTBREAKS

COVID-19: Fifteen outbreaks of COVID-19 were reported in March 2020. The three largest outbreaks were reported from Auckland (Marist College), Southern (wedding party) and Waikato (hospitality venue). For more information on COVID-19 outbreaks, see the Ministry of Health website here.

Influenza-like illness: Six outbreaks of influenza-like illness were reported in March 2020. Three outbreaks were in long-term care facilities, one in a childcare centre, one in a school, and one involved a tour bus group. Influenza A was identified in the tour group outbreak, while no pathogen was identified in the remaining five outbreaks.

Mumps: A community outbreaks of mumps was reported from Southern DHB in March. Nine cases were reported during February and March. The outbreak is continuing.

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 - Mar 2020

Tables:

Monthly National Tables - Mar 2020 (.xlsx)

Monthly DHB Tables - Mar 2020 (.xlsx)

Monthly Rolling Tables - Mar 2020 (.xlsx)

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Mar 2020

Tables:

Monthly National Tables - Mar 2020 (.xlsx)

Monthly DHB Tables - Mar 2020 (.xlsx)

Monthly Rolling Tables - Mar 2020 (.xlsx)

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