It's the other virus we've been hearing about for months.
But while we've all been learning to live with COVID-19, monkeypox cases have been on the rise around the country.
Over the weekend, health authorities issued a fresh warning about monkeypox in Victoria and New South Wales after new cases were detected.
As of Saturday, Victoria has recorded 40 monkeypox infections, an increase from 22 cases on August 4.
"Just about half of our 40 cases have been acquired within Victoria rather than overseas," said Victorian Deputy Chief Health Officer for Communicable Disease Deborah Friedman.
"We are really the only state in Australia that's seeing such an increase of local transmission."
At-risk groups, including men who have sex with men, are being advised to take preventative measures against the virus, which was first detected in Australia in May.
"The department is closely monitoring cases and contacts to prevent further spread in the community and is encouraging people who may be at risk to take preventative measures, such as limiting sexual partners, exchanging contact information with sexual partners in case it is required for contact tracing and getting vaccinated if they are eligible," said Friedman.
As cases rise, here's all your questions about monkeypox, answered.
1. Firstly, what actually is monkeypox?
Monkeypox (also known as MPX) is a viral zoonotic disease, meaning it can be spread between animals and humans.
It was first discovered in monkeys in a Danish lab in 1958. A child later became the first human infected with the disease in the Democratic Republic of Congo in 1970.