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.

Answers distribution

bacteria
virus
fungi
prion
answers
flagUkraine
0%
5%
0%
94%
19
flagItaly
9%
9%
0%
81%
22
flagthe Netherlands
4%
11%
4%
79%
62
flagFrance
6%
8%
8%
76%
46
flagRepublic of Ireland
8%
8%
9%
73%
84
flagAustralia
3%
25%
0%
70%
27
flagSweden
15%
11%
0%
69%
26
flagNorway
16%
12%
4%
68%
25
flagPoland
9%
16%
6%
67%
17069
flagGermany
9%
14%
7%
67%
204
flagCanada
10%
18%
3%
67%
76
flagthe United Kingdom
9%
17%
7%
64%
499
flagMalaysia
3%
32%
0%
64%
28
flagLithuania
7%
14%
0%
62%
27
flagIndia
8%
25%
2%
60%
360
flagUnknown
11%
20%
8%
59%
72
flagPakistan
4%
32%
6%
58%
50
flagSingapore
15%
21%
5%
57%
19
flagthe United States
14%
23%
5%
55%
951
flagthe Philippines
8%
30%
4%
52%
69

Gender

men67%
women67%
bacteria
9%
9%
virus
15%
15%
fungi
7%
6%
prion
67%
67%

Language versions

question
answers
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Which infectious agent is the smallest?
2038
57%

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