- 0 new Diphtheria cases in Australiareported on 7 October 2026.
Australia
New South Wales
Victoria
Queensland
Western Australia
South Australia
Tasmania
ACT
NT
- – Very low: under 1 case a day across the week, so there is no trend to read.
- 613 cases from January to September 2026, up from 13 cases in the same period in 2025.
| DATE | YTD | NET | 7D AV |
|---|---|---|---|
| Wed07 Oct | 612 | – 0 | – |
| Tue06 Oct | 612 | – 0 | – |
| Mon05 Oct | 612 | – 0 | – |
| Sun04 Oct | 612 | – 0 | – |
| Sat03 Oct | 612 | – 0 | – |
| Fri02 Oct | 612 | – 0 | – |
| Thu01 Oct | 612 | – 0 | 0 |
| DATE | YTD | NET | 7D AV |
|---|---|---|---|
| Wed30 Sep | 613 | – 0 | 0 |
| Tue29 Sep | 613 | – 0 | 0 |
| Mon28 Sep | 613 | – 0 | 0 |
| Sun27 Sep | 613 | – 0 | 1 |
| Sat26 Sep | 613 | – 0 | 1 |
| Fri25 Sep | 613 | – 0 | 1 |
| Thu24 Sep | 613 | ↑ 1 | 1 |
| Wed23 Sep | 612 | ↑ 1 | 0 |
| Tue22 Sep | 611 | ↑ 1 | 0 |
| Mon21 Sep | 610 | ↑ 1 | 0 |
| Sun20 Sep | 609 | – 0 | 0 |
| Sat19 Sep | 609 | – 0 | 0 |
| Fri18 Sep | 609 | – 0 | 0 |
| Thu17 Sep | 609 | – 0 | 1 |
| Wed16 Sep | 609 | ↑ 1 | 1 |
| Tue15 Sep | 608 | – 0 | 2 |
| Mon14 Sep | 608 | ↑ 1 | 3 |
| Sun13 Sep | 607 | – 0 | 3 |
| Sat12 Sep | 607 | – 0 | 3 |
| Fri11 Sep | 607 | ↑ 4 | 3 |
| Thu10 Sep | 603 | ↑ 3 | 3 |
| Wed09 Sep | 600 | ↑ 3 | 3 |
| Tue08 Sep | 597 | ↑ 7 | 3 |
| Mon07 Sep | 590 | ↑ 5 | 2 |
| Sun06 Sep | 585 | – 0 | 2 |
| Sat05 Sep | 585 | – 0 | 3 |
| Fri04 Sep | 585 | ↑ 2 | 3 |
| Thu03 Sep | 583 | ↑ 3 | 3 |
| Wed02 Sep | 580 | ↑ 4 | 3 |
| Tue01 Sep | 576 | ↑ 1 | 3 |
About Diphtheria
Diphtheria is caused by toxin-producing Corynebacterium diphtheriae or, rarely, Corynebacterium ulcerans bacteria.
The bacteria can:
The bacteria can also make toxins, which lead to serious complications.
Read more about diphtheria.