Health minister Jill Hennessy has hit back at anti-vaxxers who have abused and threatened her over the government's vaccination policies.

Ms Hennessy has revealed she's been bombarded with abuse and hate mail, whenever policies to increase vaccination rates are aired.

Jill Hennessy at The Royal Women's Hospital. Credit:Justin McManus

The minister, a strong proponent of the importance of vaccinations, has revealed some of the most abusive messages in which she is called a "dirty dog" and an "evil bitch", saying Victorians should be aware of the true nature of anti-vaccine campaigners so as to better understand claims against science.

Ms Hennessy said sometimes it was necessary to shine a light on people "typing acid", even if that meant giving trolls greater exposure.