VANCOUVER (CBC) - Parents who suspect their children have swine flu are putting so much pressure on the emergency room at BC Children's Hospital in Vancouver that officials are asking families to keep their children home unless they have severe symptoms.

The emergency ward normally sees 120 to 130 children a day, but concerns about H1N1 have increased the number of daily visits to about 200, more than a 50 per cent increase.

"We need parents' support to help us manage this surge in patients," said Dr. Ran Goldman, head of emergency at BC Children's Hospital.

Most of the additional children brought to emergency don't need to be there.

But parents like Jason Purvis are concerned about swine flu and want to err on the side of caution. He brought his sick 11-month-old daughter, Talia, to the hospital to get examined.

"She has had a bad cough and they say respiratory is the bigger deal, so we're just here to make sure there's nothing more we can do," Purvis told CBC News on Friday.

Parental fears might be understandable, but hospital staff are worried that resources are being needlessly diverted.

"It just takes away from some of those who might be more acutely ill and need to get seen faster, so it's a longer wait for everybody," said Patti Byron, head of patient care.

When parents bring in one sick child, they often have to bring along other children who can't be left home alone. The hospital is asking that people now seek alternatives before bringing the whole family along, and that only one or two members make the trip.

Hospital officials reiterated guidelines Friday for parents considering seeking emergency care for their children.

They advised that if parents suspect their child has the flu, they should go to the hospital only if the child: