Mpox: New Variant Detected in Toronto – What You Need to Know

Mpox Update: New Variant Identified in Toronto

Toronto Public Health (TPH) has confirmed two travel-related cases of a rapidly spreading variant of the mpox virus. These are the first identified cases of the mpox clade Ib strain in both Toronto and Ontario, prompting increased vigilance and public health awareness.

What is the Mpox Clade Ib Variant?

This novel variant has been linked to outbreaks in Central and Eastern Africa and has been detected in a limited number of travel-related cases internationally, including several European countries. Previously, mpox cases in Toronto, since 2022, have exclusively involved the clade IIb strain of the virus. According to the Public Health Agency of Canada, the clade Ib variant is considered “less severe” than the clade Ia strain.

Who is at Risk?

While cases have been reported across Toronto, TPH data indicates a higher concentration of mpox cases among residents in the downtown core. Last year, the city recorded 155 confirmed cases. Currently, the virus primarily spreads through close, intimate, or sexual contact. Gay, bisexual, and other men who have sex with men remain the most affected population, according to TPH.

How Does Mpox Spread?

Mpox is transmitted through person-to-person contact with:

Infected skin lesions
Skin blisters
Body fluids
Respiratory secretions

Transmission can also occur through contact with contaminated materials, such as clothing or bedding, and, less commonly, through bites or scratches from infected animals.

Symptoms of Mpox

Both the clade Ib and clade IIb variations of the mpox virus present similar symptoms, including:

Painful skin lesions
Fever
Flu-like symptoms

Prevention and Treatment

Fortunately, both variations of the mpox virus can be prevented and treated using the same methods. Vaccination remains the most effective preventative measure, and TPH continues to offer the Imvamune vaccine to eligible residents through its clinics and community partners. The vaccine is free and accessible without an OHIP card.

Vaccination Schedule:

Optimal Protection: Two doses are recommended.
One Dose Received: A second dose is encouraged 28 days after the first.
Two Doses Received: No additional doses are currently needed.

Appointments can be booked online through the TPH website or at participating 2SLGBTQ+ health-care service providers. Even individuals who have previously received a smallpox vaccine are advised to get vaccinated against mpox, as prior protection may not be sufficient.

Post-exposure treatment is also available for individuals who believe they may have been exposed to the mpox virus. For more information and resources, please visit the Public Health Agency of Canada website.