21 Americans Infected With Monkeypox, C.D.C. Reports June 3, 2022 Auto Bot Centers for Disease Control and Prevention, Emergent BioSolutions Inc, Great Britain, monkeypox, Smallpox, Stockpiling, United States, Vaccination and Immunization, your-feed-science 0 As the number of cases outside Africa approaches 800, governments are scrambling for a limited pool of vaccines and treatments with unclear effectiveness.