According to the CDC, HPIV-1 peaks biennially in the fall in odd years in the
U.S..
That's now. I know it is relatively easy to pass an infection on to another
person, but
is there some way to pass on antibodies. For example, if one person with a
weak
immune system comes down with a bad case of HPIV-1 and a second, with a strong
immune system comes down with only a mild case, is there some way to pass on
antibodies from the one with the strong immune system to the other with the
weak
one.
Ralph L. Samson