Kawasaki disease virus is not contagious.
Actually it's not known for sure if the Kawasaki disease is caused by a virus or bacteria but either way the Kawasaki disease is not contagious.
You cannot get Kawasaki Disease from someone who you're around.
So it's safe to be around someone or other people who have Kawasaki disease.
The cause of Kawasaki Disease can be Viral or Bacterial but the actual cause is not known but there's still research that is being done to hopefully identify the cause of the Kawasaki Disease.
You can safely be around someone who does have Kawasaki Disease and not get it.
Kawasaki Disease is not a communicable Disease.