Carrier State/ethnology; Carrier State/microbiology; Haemophilus Infections/ethnology; Haemophilus Infections/microbiology; Haemophilus influenzae; Hospitalization; Infection Control; Nasopharynx/microbiology; Native Hawaiian or Other Pacific Islander; Pneumococcal Infections/ethnology; Pneumococcal Infections/microbiology; Respiratory Tract Infections/ethnology; Respiratory Tract Infections/microbiology; Acute Disease; Anti-Bacterial Agents/blood; Anti-Bacterial Agents/therapeutic use; Carrier State/blood; Carrier State/drug therapy; Child; Child, Preschool; Drug Monitoring; Drug Residues; Drug Utilization; Female; Haemophilus Infections/blood; Haemophilus Infections/drug therapy; Haemophilus influenzae/classification; Humans; Infant; Infant, Newborn; Male; Pneumococcal Infections/blood; Pneumococcal Infections/drug therapy; Racial Groups; Respiratory Tract Infections/blood; Respiratory Tract Infections/drug therapy; Serotyping; Streptococcus pneumoniae/classification