Now what will you look for? Each infant assigned to the nursery remained in the same bassinet until discharge and three nurse were permanently assigned to the nursery. The nursery was closed for six months for cleaning.

Proteus vulgaris is a bacteria which can cause cerebral death if enters into the bloodstream.

Explanation:

If all the infants are kept in the same nursery with the same nurses the newly admitted babies are expected to receive the infection of Proteus vulgaris. It is a rare newborn infection.  The nurses are required to be replaced in the nursery as under observation the chances of their infection remains prominent. The bacteria makes its way through wounds and natural orifices.

age range would be the answer