Dr. Casey Means, a wellness influencer who rose to prominence by lambasting traditional medicine and accusing pharmaceutical companies of corruption, bore little resemblance to her online persona Wednesday when she appeared before the Senate. In measured comments before the Senate Health, Education, Labor and Pensions Committee to discuss her nomination for surgeon general, Means sidestepped questions on vaccines, birth control and pesticides — subjects she has often depicted as dangerous to human health — at times visibly frustrating lawmakers on both sides of the aisle. “Do you believe that there is evidence that the flu vaccine prevents serious disease or that it prevents hospitalizations or death in children?” Sen. Tim Kaine, D-Va., asked. “I believe that all patients should talk to their doctor,” Means said. After Kaine pressed several times for a clearer answer, Means eventually replied: “At the population level, I certainly think it does.” “This is not a hard question,” Kaine said.…