Which infectious agent is the smallest?
bacteria
virus
fungi
prion
A prion is a single protein in a misfolded form. The prion theory was developed to explain the discovery that the mysterious infectious agent causing the diseases scrapie and Creutzfeldt–Jakob disease resisted ionizing radiation. The data suggested that the infectious agent was too small to be a virus.
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Answers by country
bacteria
virus
fungi
prion
answers

40

45

70

40

88

25431

458

145

115

164

1017

1049

55

49

39

1222

108

84

139

38