Monthly Notifiable Disease Surveillance Report - Apr 2022

Thursday 7th July 2022


Key Notifiable Disease Trends

COVID-19: There were 262,391 cases of COVID-19 notified in April 2022. More information on COVID-19 cases can be found on the Ministry of Health website.

Enteric fever: There were three confirmed cases of enteric fever (one typhoid fever and two paratyphoid fever) notified in April 2022, compared with one case of typhoid fever for the same month in 2021. All three cases were hospitalised. The cases had all travelled overseas during the incubation period; the typhoid case had been in India and the paratyphoid cases had been in India and Pakistan. 

Legionellosis: There were 17 cases of legionellosis (14 confirmed, 1 probable, and 2 under investigation) notified in April 2022, compared with 11 cases for the same month in 2021. Of the 13 confirmed and probable cases where the species was identified, six were due to Legionella pneumophila which is associated with warm water systems, five were due to L. longbeachae which is associated with compost and potting mix, and two were due to L. sainthelensi.

OUTBREAKS

Respiratory illness: There were 44 respiratory illness outbreaks reported in April 2022. Forty-three were COVID-19 outbreaks and one was acute respiratory infection (ARI). Thirty-three outbreaks were in long-term care facilities, four were in other institutions, three were at community/church/sports gatherings, and one each were in an acute care hospital, a hostel/boarding house, a marae and a workplace.

Vibrio parahaemolyticus infection: Ten new cases of gastroenteritis due to Vibrio parahaemolyticus infection have been notified since February 2022 (see the February 2022 monthly report). From November 2021 to April 2022, 60 cases have been reported. Cases consumed a variety of raw and cooked seafood. Samples from 53 cases have been sequenced and show several different sequence types, with ST50 the most common (42 cases, 79.2%).

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 - Apr 2022

Tables:

Monthly National Tables - April 2022 (.xlsx)

Monthly DHB Tables - April 2022 (.xlsx)

Monthly Rolling Tables - April 2022 (.xlsx)

 

DOWNLOADS

Monthly Notifiable Disease Surveillance Report - Apr 2022

Tables:

Monthly National Tables - April 2022 (.xlsx)

Monthly DHB Tables - April 2022 (.xlsx)

Monthly Rolling Tables - April 2022 (.xlsx)

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