3. Patient < year of age has at least 2 of the following signs or symptoms with no other recognized cause: fever (>38oC rectal), hypothermia (<37oC rectal), apnea, bradycardia, nasal discharge, or purulent exudates in throat.
AND at least 1 of the following:
a. Organisms cultured from the specific site.
b. Organisms cultured from the blood.
c. Positive antigen test on blood or respiratory secretions.
d. Diagnostic single antibody titer (IgM) or 4-fold increase in paired sera (IgG) for pathogen.
e. Physician diagnosis of an upper respiratory infection.