SEE the moment someone vandalises the controversial anti-vaccination billboard in Perth’s CBD.

The person cheekily answers the question “Do you know what’s in a vaccine?” with “A: common sense”.

Premier Mark McGowan said the State Government was looking at its options to take down the billboard on Brisbane Street.

“We want to encourage people to vaccinate, so we’re look at what options we’ve got available to us,” he said.

Last year, 90.6 per cent of Perth children were immunised, which is below the national target of 95 per cent.