Pulse ·

Mpox cases surging in Victoria: what GPs need to do now

By Dr HB Lo, FACRRM 3 min read
Verdict Yes — worth knowing about

Victoria has recorded 52 mpox cases since 1 August 2026, with 240 nationally year-to-date — already above 2025's full-year total of 228. Victoria accounts for 119 of those 240 cases. The Chief Health Officer has urged clinicians to consider mpox in any sexually active patient with compatible symptoms, regardless of vaccination history or travel background.

Key GP actions: test symptomatic patients without relying on travel history or vaccination status, advise covering lesions pending results, offer free vaccination to eligible high-risk patients, ensure both doses are completed, and report suspected cases within 24 hours.

Fifty-two mpox cases in Victoria since the start of August. Two hundred and forty nationally so far this year — already ahead of the 228 cases recorded across all of 2025.

Victoria’s Chief Health Officer Dr Caroline McElnay has issued a direct message to clinicians: consider mpox in any sexually active patient presenting with compatible symptoms, regardless of their vaccination history or travel background.

That shift matters. In the early years of the current mpox outbreak, clinical suspicion was often anchored to travel history — returning from a region with higher case counts, or from international events with documented transmission. The Victorian case data no longer supports that frame. Victoria accounts for 119 of the 240 national cases year-to-date as of 15 September 2026. This is community transmission, not primarily travel-linked.

The clinical picture

Mpox presents with fever, lymph node swelling, sore throat, fatigue, and muscle pain, followed by a characteristic rash. The rash can appear anywhere on the body — including the genitals, rectum, and mouth — and symptoms emerge up to 21 days after exposure.

The clinical complication introduced by vaccination is presentation masking. Vaccinated individuals may develop milder or atypical presentations — fewer lesions, less pronounced prodromal symptoms — that do not immediately register as mpox in a standard clinical assessment. This means vaccination history cannot be used to exclude the diagnosis.

The core GP responsibility is straightforward: test any sexually active patient with compatible symptoms. Don’t wait for travel history to align. Don’t rely on a vaccinated patient’s status to exclude infection.

Pending results, patients should cover any visible lesions and limit close contact with others. Free vaccination remains available for eligible high-risk individuals — and previously vaccinated patients who have not completed both doses of the course should be offered their second dose.

Reporting is mandatory: suspected or confirmed cases must be notified to the Victorian Department of Health within 24 hours.

Both sides of this

The public health case here is unambiguous. Victoria has a surging case count, national notifications are running above last year’s annual total with three and a half months of the year still to go, and the CHO has made the clinical guidance explicit. When a state health officer says consider mpox in any sexually active patient with compatible symptoms, the public health intent is clear: broaden the testing net before the outbreak broadens further.

The tension worth holding: mpox has, since its re-emergence in 2022, been disproportionately associated in public discourse with men who have sex with men. The epidemiology does show that gay, bisexual, and other men who have sex with men with multiple or casual partners are at higher risk. The guidance from Victoria’s CHO is explicit that the risk extends to any sexually active person exposed to the virus — regardless of sexual orientation.

This matters for clinical practice. A GP who applies demographic assumptions to their testing threshold will miss cases. The CHO’s framing — any sexually active patient with compatible symptoms — is designed to remove that filter. Stigma is a transmission risk: patients who believe mpox is not their disease will not present early, and clinicians who share that assumption will not test.

The clinical rule is symptoms plus sexual activity, not demographics.

What this means in general practice this week

If you are seeing patients with compatible symptoms — fever, rash, lymphadenopathy, oral or anogenital lesions — mpox should be on your differential, particularly in Victoria.

Three immediate actions:

Test without travel history dependency. The Victorian CHO has been specific: travel history and vaccination status do not exclude the diagnosis. Clinical assessment drives testing decisions.

Offer vaccination to eligible patients. Free mpox vaccination is available for high-risk individuals in Victoria. If you have patients who are at higher risk and who haven’t been vaccinated or who have not completed their two-dose course, this is the time to offer it.

Report within 24 hours. Mpox is a notifiable condition. Suspected and confirmed cases must be reported to the Victorian Department of Health within 24 hours of diagnosis. National guidance is available from the Australian Government Department of Health and Aged Care.

The case count is telling us something. We have already exceeded last year’s national annual total with months remaining. This is the moment for active clinical vigilance, not wait-and-see.

Verdict: yes — mpox is rising in Victoria and GPs are the first clinical contact for many patients who will present with compatible symptoms. The guidance is clear; the action is defined.

Sources cited

  1. Vic GPs urged to test as mpox cases rise — Medical Republic, 17 September 2026
  2. Mpox — Australian Government Department of Health and Aged Care

Frequently asked questions

  • What symptoms should prompt mpox testing?

    Fever, lymph node swelling, sore throat, fatigue, muscle pain, and any rash — including genital, rectal, or oral lesions — appearing up to 21 days after potential exposure. Victoria's Chief Health Officer advises considering mpox in any sexually active patient with these features, without relying on travel history or vaccination status to exclude the diagnosis.

  • Does vaccination prevent mpox infection?

    Vaccination reduces severity but does not eliminate infection risk. Vaccinated individuals may present with milder or atypical symptoms, so clinical suspicion must be maintained regardless of vaccination status. Ensure previously vaccinated patients have completed the full two-dose course.