Took 2 months to get over it. Our son stopped breathing on us at home at 5 months, we used CPR to get him breathing again, and he spent a week in the hospital with it. His went into pneumonia. From what I understand, RSV is just a really nasty cold for the normal person, but for a child with resperatory problems or a weak immune system, it can be very dangerous.
Many children die from it every year.
They do have a VERY new vaccine for it, which they are only giving to children at the greatest risk of severe reactions. The vaccine is given in 3 doses, once a month for 3 months. The good thing about RSV is once you've had it, your immune to that strain of it. Oh, RSV hits mainly in the winter. Hope that helped.