Respiratory

0 new Legionellosis cases in Australia

Australia New South Wales Victoria Queensland Western Australia South Australia Tasmania ACT NT

reported on 13 October 2026.
– Stable: the 7-day average of 1.0 per day is tracking close to the 28-day average.
525 cases from January to September 2026, 8% lower than the same period in 2025.

Daily Monthly Yearly Compare

DATE	YTD	NET	7D AV
Tue13 Oct	530	– 0	–
Mon12 Oct	530	– 0	–
Sun11 Oct	530	– 0	–
Sat10 Oct	530	– 0	–
Fri09 Oct	530	– 0	–
Thu08 Oct	530	– 0	–
Wed07 Oct	530	– 0	1
Tue06 Oct	530	– 0	1
Mon05 Oct	530	↑ 1	1
Sun04 Oct	529	↑ 1	1
Sat03 Oct	528	↑ 1	1
Fri02 Oct	527	↑ 1	1
Thu01 Oct	526	↑ 3	2

DATE	YTD	NET	7D AV
Wed30 Sep	525	↑ 1	1
Tue29 Sep	524	↑ 2	1
Mon28 Sep	522	– 0	2
Sun27 Sep	522	↑ 1	2
Sat26 Sep	521	↑ 1	2
Fri25 Sep	520	↑ 3	2
Thu24 Sep	517	↑ 1	2
Wed23 Sep	516	↑ 1	2
Tue22 Sep	515	↑ 4	2
Mon21 Sep	511	↑ 3	2
Sun20 Sep	508	↑ 2	1
Sat19 Sep	506	↑ 3	1
Fri18 Sep	503	↑ 2	1
Thu17 Sep	501	↑ 1	2
Wed16 Sep	500	– 0	2
Tue15 Sep	500	↑ 1	2
Mon14 Sep	499	↑ 1	2
Sun13 Sep	498	↑ 1	2
Sat12 Sep	497	↑ 4	2
Fri11 Sep	493	↑ 3	2
Thu10 Sep	490	↑ 1	2
Wed09 Sep	489	↑ 3	2
Tue08 Sep	486	↑ 1	2
Mon07 Sep	485	↑ 2	2
Sun06 Sep	483	↑ 1	2
Sat05 Sep	482	↑ 1	2
Fri04 Sep	481	↑ 4	2
Thu03 Sep	477	↑ 1	1
Wed02 Sep	476	↑ 2	1
Tue01 Sep	474	– 0	1

About Legionellosis

Legionellosis is any disease caused by Legionella bacteria.

There are 2 types of Legionella bacteria that commonly cause disease in Australia.

Legionella pneumophila is found in warm water. It is most often associated with water systems such as:

Legionella longbeachae is found in soil. It is most often associated with: