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

46

70

40

88

25487

460

145

115

165

1027

1050

55

49

39

1225

108

84

139

38