​​Latest surveillance summary

COVID-19 and influenza activity remain at low levels. RSV activity remains at high levels. Now is the recommended time to get your influenza vaccine.

Epidemiological summary

Week ending 20 April 2024


COVID-19 and influenza activity remain at low levels. There are, however, some indications of an increase in influenza with an increase in notifications since last week and two consecutive weeks of increase in the proportion of positive influenza tests. Presentations to, and admissions from, emergency departments for children with bronchiolitis remain high. RSV activity remains at high levels.

Data sources and methods

NSW Health continually reviews the methods used to monitor respiratory virus activity in New South Wales. This is due to changes in testing, notification patterns and levels of respiratory virus, including COVID-19, in the community. These changes affect the usefulness of notifications for monitoring virus activity and community transmission over time. The Public Health, Rapid, Emergency and Syndromic Surveillance (PHREDSS) data, COVID-19 sewage surveillance program, whole genome sequencing (WGS) data and sentinel laboratory respiratory virus test results are currently of most value for monitoring COVID-19 and other respiratory viruses of importance in the community. Registration of positive COVID-19 rapid antigen tests (RAT) in NSW ceased on 30 September 2023 and notifications now only reflect cases referred by a doctor for PCR. NSW Health also monitors COVID-19 outbreaks in residential aged-care facilities that are published by the Australian Government and COVID-19 antiviral prescriptions dispensed in NSW. 

The data source for this report updates as new information becomes available. Therefore, this report cannot be directly compared to previous versions of the NSW Respiratory Surveillance Report or to previous reporting periods. For additional information on the data sources and methods presented within this report please refer to COVID-19 surveillance report data sources and methodology.

Current as at: Thursday 25 April 2024
Contact page owner: Health Protection NSW