New data show that monkeypox vaccination is reducing the risk of contracting the virus even after the first dose in a two-dose series, the Centers for Disease Control and Prevention announced, demonstrating the vaccine’s effectiveness as new cases of monkeypox in the United States begin to decrease. “This is really our first view at how well our vaccines are working,” CDC Director Rochelle Walensky said Wednesday (Sept. 28). CDC also announced it is expanding the population of people eligible to...