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.
I think part of this is the lack of concrete understanding of what communism means to the average American. It just means "bad place that does bad things." You could probably get a plurality of Americans to say Mexico is communist too if you frame the question right.
The Republic of Hexico