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
Italy
40
the Netherlands
45
Republic of Ireland
70
Greece
40
Australia
88
Poland
25360
the United Kingdom
457
Pakistan
145
Canada
115
Austria
163
Germany
1004
India
1049
Malaysia
55
Unknown
49
Ghana
39
the United States
1215
Switzerland
107
Nigeria
84
the Philippines
138
the United Arab Emirates
38