Jonathan, thank you for your response.  I have additional information about
the family.  The family is NOT, I repeat NOT, out of the house.  (Tests
aren't back yet that confirm exposure and the family has nowhere to go and no
money to go there anyway.)  I misunderstood that part entirely.  So, our
question is--is the baby in danger from the double (?) exposure--or is there
a double exposure?  When test results are back, I'll update you.

More background--The house belongs to the grandmother of the baby.  Mother,
baby, and 2 yo sibling of baby live with grandmother.  A sister (of the
mother) also  lives, in the house and had a baby that died of SIDS in that
house.  The 2 yo sibling of the baby spent roughly 50 days in hospital over
the course of first year of his life with upper respiratory infections, FTT
at one point, etc.  The baby would get sick, go in hospital and get better;
go home and get sick again repeatedly.  Social Workers and home health nurses
fussed at parents repeatedly saying baby was getting sick because parents
weren't taking proper care of the baby.  (I don't know if the 2 yo was
breastfed.)  The 3 month old is being breastfed, has no symptoms and is
thriving.