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RT @AnnRudbeck: Smallpox has a CFR of 30%. https://t.co/OL41lAlG4i
RT @AnnRudbeck: Smallpox has a CFR of 30%. https://t.co/OL41lAlG4i
Gone but not forgotten... because its held in only a select few bio labs in the world. https://t.co/Xzg1gbssKq