A new billboard placed in Perth has sparked controversy and outraged doctors.

A woman is pictured holding texts books with a question next to her asking - do you know what’s in a vaccine?

It then provides a link to a radical American anti-vaccination group called ‘Learn The Risk’.

The Australian Medical Association is now calling for the billboard to be pulled down immediately.

It says not only is it a public health risk but it is also misleading and conspiracy theory garbage.

The AMA says international anti-vaccination lobby groups are not welcome in WA. (9News)

The State Government also wants to see the billboard banned with Health Minister Roger Cook asking the Department to investigate whether powers under the Public Health Act could be used.

He says the anti-vaccination lobby is once again spreading dangerous misinformation, with vaccines the best way to prevent children from potentially deadly diseases.

The AMA says international anti vaccination lobby groups are not welcome in WA.

But lawyers say given our freedom of speech rights in Australia, the State Government will have a tough time getting rid of it.

At just 32 days old, Perth mother Catherine Hughes lost her baby boy Riley to whopping cough.

He was too young to be vaccinated.

She says given the nations strict advertising laws, she's flawed it's slipped through.

The City of Vincent is now trawling through records to determine whether the billboard was approved for installment.

The City said in a statement that they did not approve the anti-vaccination advertisement on the billboard.

"The City of Vincent is strongly opposed to the advertising material on the billboard and we are advocating for its urgent removal," they said.

"We will do whatever we can to support the State Government in this.