Five-week-old baby boy fighting for life in hospital after parents' refused a vital anti-vax shot 

• Baby is in critical condition after suffering a catastrophic brain haemorrhage 
• The five-week-old's parents refused to administer the suggested vitamin K shot
• Babies are born with low levels of vitamin K, the injection helps the blood to clot 
• If the child survives it is likely to be severely disabled for the rest of his life

A parents' decision to decline a routine anti-vax shot has left a baby boy fighting for his life after suffering a severely damaging brain haemorrhage.

The five-week-old is now in a very serious condition in Lismore Hospital Base with bleeding on the brain after his parents refused to give him a vitamin K shot, The Sunday Telegraph reports.

The baby, from northern NSW, was then transferred to Lady Cilento Children's Hospital in Brisbane where if he pulls through, he will be likely left critically disabled.

The preventative vitamin K shot has been regarded as new fighting points of anti-vaccine activists, who tactically scare new parents into dismissing the shot - a safe injection which has saved hundreds of newborns from fatal haemorrhagic disease. 

Due to Australia's No Jab, No Play campaign, parents who deny vaccines are not entitled to family payments and the childcare rebate, and will soon be cut off from access childcare, as Malcolm Turnbull has vowed. 

As babies are born with low levels of vitamin K the injection helps the blood to clot. 

Prior to the recommended vaccine the natural deficiency once claimed an average of 15 babies per year in NSW. 

Since the introduction of the shot in the 1970's that number has dropped to nearly zero. 

Over the last 20 years, six babies have died from the disease after their parents refused the injection. 

Lismore pediatrician Chris Ingall is all too familiar with the disease. He has cared for a number of babies with bleeds, including one that died, said he saw two to three families each week refusing the injection. 

'It is one of the hardest things to do to tell a patient their baby is not going to survive,' Dr Ignall said.  

He said it would be wonderful if the shot was tied to the immunisation program. 

Opposition health and Medicare spokewoman Catherine King, who is not a doctor, wants the government to address misinformation about vaccination and vitamin K.  

'I don't want parents turning to Google and being influenced by misinformed views that could put children at risk,' she said, 

A Health Minister spokesman for Greg Hunt said 'vitamin K is a preemptive therapy and not an immunisation, therefore it cannot be considered for the National Immunisation program.'