PlagueYersinia pestisSmallpox VaccineSiphonapteraPlague VaccineVariola virusMadagascarYersinia pseudotuberculosisVirulencePore Forming Cytotoxic ProteinsVirulence FactorsVacciniaBacterial ProteinsBacterial Outer Membrane ProteinsMonkeypox virusMonkeypoxVaccinia virusBiological WarfarePoxviridae InfectionsAntigens, BacterialOrthopoxvirusLymph NodesVaccinationMass VaccinationPericarditisHistory, 18th CenturyPoxviridaeHistory, MedievalAdverse Drug Reaction Reporting SystemsHistory, 19th CenturyHistory, 20th CenturyHistory, 17th CenturyDisease ReservoirsEctromelia virusCowpox virusDisease OutbreaksEctromelia, InfectiousHistory, 16th CenturyImmunization ProgramsIsoindolesCivil DefenseSciuridaeBiological Warfare AgentsRodentiaKaposi Varicelliform EruptionRodent DiseasesHistory, 15th CenturyCompensation and Redress