Public Health Hot Topics and Alerts
From time to time, public health issues arise which may have an actual, or potential, impact on the community. Public health alerts and reports issued by the Public Health Unit may be related to communicable or other infectious diseases, or environmental health risks.
This page provides links to current public health topics relevant to South Eastern Sydney Local Health District residents, as well as alerts concerning New South Wales.
Legionnaires' disease – CBD update
As of 9 January 2026, 11 AM
- Confirmed cases: 6
- Age range: 28–83 years
- Exposure period: 9–19 December 2025
Legionnaires' CBD outbreak – Media update (29 December 2025)
Legionnaires' disease – frequently asked questions
This outbreak is no longer considered active.
Preliminary findings of public health investigation into cancer concerns at Blakehurst High School
(16 December 2025)
South Eastern Sydney Public Health Unit have investigated concerns raised by members of the Blakehurst High School community about cancer incidence amongst staff. Preliminary findings of the investigation are available here.
In short, the investigation has found no environmental causes of cancer that staff or students would have been exposed to at Blakehurst High School, and analysis of available data found that the number of cancers diagnosed is no more than would be expected in the Australian population.
A final report will be shared in early 2026 which will provide more detailed information about the findings outlined in this preliminary report.
- Measles alerts for Sydney 12 December 2025 and 23 December 2025
- Blood borne virus risk for patients of a dental practice in Mortdale: In October, NSW Health issued advice that current and former patients of Mr Safuan Hasic (also known as Steven Hasic), a previous sole dental practitioner based at 70 Victoria Avenue, Mortdale, get tested for blood borne viruses due to infection control breaches identified at his practice. A frequently asked questions page is available to provide further information on this issue and what you should do.
Public health alerts for NSW can also be found here .