PoliomyelitisSmallpoxPoliovirus Vaccine, OralImmunization ProgramsWorld HealthDisease EradicationHelicobacter InfectionsHelicobacter pyloriAmoxicillinClarithromycinOmeprazoleAnti-Ulcer AgentsMetronidazoleBismuth2-PyridinylmethylsulfinylbenzimidazolesAnti-Bacterial AgentsDrug Therapy, CombinationTinidazoleLansoprazoleDuodenal UlcerProton Pump InhibitorsDyspepsiaFurazolidonePeptic UlcerRanitidinePoliovirus VaccinesDracunculiasisBreath TestsRabeprazoleGastritisPenicillinsAntacidsDracunculus NematodeTreatment OutcomeAntitrichomonal AgentsSulfoxidesGastric MucosaPoliovirusStomach UlcerAnti-Infective AgentsTetracyclineGastroscopyPoliovirus Vaccine, InactivatedLymphoma, B-Cell, Marginal ZoneStomach NeoplasmsOrganometallic CompoundsLevofloxacinPopulation SurveillanceAmericasBenzimidazolesCommunicable Disease ControlMetaplasiaMeaslesHistamine H2 Antagonists