RoxithromycinLymphocytic choriomeningitis virusLymphocytic ChoriomeningitisVirus DiseasesLeucomycinsArenaviridae InfectionsAcute DiseaseImmunologic MemoryCD8-Positive T-LymphocytesErythromycinAzithromycinMice, Inbred C57BLAnti-Bacterial AgentsMacrolidesKetolidesClarithromycinSpleenCD4-Positive T-LymphocytesMice, KnockoutLymphocyte ActivationT-Lymphocyte SubsetsAdoptive TransferMice, TransgenicAntigens, ViralFlow CytometryErythromycin EstolateMice, Inbred BALB C