In the new study, the authors surveyed 2,200 people and found 53% had some concern about the safety, efficacy or necessity of canine vaccines. Nearly 40% were concerned that vaccines could cause dogs to develop autism, a theory without any scientific merit.
The poll, released Tuesday by The Economist / YouGov, found that 52 percent of Republicans agreed that Russia was operating under Communism, despite the country not being Communist since the Soviet Union dissolved in 1991. Among all Americans, 42 percent thought that Russia was Communist, including 44 percent of Democrats.