Concerns continue to grow this morning about enterovirus 68.

A handful of children are now being tested for the respiratory illness at the Maria Fareri Children's Hospital in Valhalla. The good news is that, so far, all those tests have come back negative so there are no confirmed cases in the Hudson Valley at this point.

However, the enterovirus 68 has sickened hundreds of children across the country and there have been about a dozen cases in New York and Connecticut.

Enterovirus 68 is a new strain of a respiratory illness that usually starts off like the common cold; runny nose, cough, sometimes a fever. The only way doctors can confirm a case is through testing.

Health officials say this virus can be more problematic than a cold, especially for children with asthma. Doctors say in the worst cases life support was needed for breathing difficulties, but no deaths have been reported.

As of now there is no specific treatment or vaccine for enterovirus 68, but doctors say there are things you can do to help prevent your child from getting sick. "Instructing your child to cough into their elbow if they have any kind of symptoms and keeping the hands away from any mucus membranes, the eyes, the nose," says Dr. Shelia Nolan, of Maria Fareri Children's Hospital.