MacrolidesPrevalenceSteroidsErythromycinAnti-Bacterial AgentsAzithromycinKetolidesRoxithromycinJosamycinLeucomycinsTylosinMicrobial Sensitivity TestsChild WelfareClarithromycinDisabled ChildrenChild BehaviorSpiramycinLincosamidesDrug Resistance, BacterialCross-Sectional StudiesVirginiamycinRisk FactorsGonadal Steroid HormonesStreptococcus pneumoniaeReceptors, SteroidMiocamycinRNA, Ribosomal, 23SClindamycinDrug Resistance, MicrobialAge FactorsChild Health ServicesStreptograminsChild RearingLincomycinQuestionnairesChild, InstitutionalizedPolyenesUnited StatesChild Behavior DisordersRetrospective StudiesFluoroquinolonesMycoplasma pneumoniaeStreptococcus pyogenesChild PsychologyInfant, NewbornAge DistributionAnti-Infective AgentsSex FactorsProspective StudiesChild of Impaired ParentsTime FactorsStreptogramin BDrug Resistance, Multiple, BacterialChild, OrphanedPneumococcal InfectionsDental Care for ChildrenParentsBrazilPregnancySex DistributionSocioeconomic FactorsChild Nutrition DisordersSteroid 21-HydroxylaseRespiratory Tract InfectionsTreatment OutcomeIncidenceStreptomycesRural PopulationBronchiolitisHealth SurveysMoraxella (Branhamella) catarrhalisCommunity-Acquired InfectionsChild Nutritional Physiological PhenomenaAsthmaUrban PopulationOleandomycinLactamsIndiaHaemophilus influenzaeTetracyclinesStreptococcal InfectionsLogistic ModelsFollow-Up Studies4-QuinolonesPneumonia, MycoplasmaChild LanguageSpainMycoplasma hominisProgesteroneDrug UtilizationAnabolic AgentsPolymerase Chain ReactionChild MortalityGlucocorticoidsEstradiolAnti-Inflammatory AgentsObesityCase-Control StudiesMothersSeverity of Illness Index