Which infectious human disease has been eradicated?

smallpox
leprosy
cholera
typhus
After vac­ci­na­tion cam­paigns through­out the 19th and 20th cen­turies, the WHO cer­ti­fied the erad­i­ca­tion of smallpox in 1979. The fact that humans are the only reser­voir for smallpox in­fec­tion, and that carriers did not exist, played a sig­nif­i­cant role in the erad­i­ca­tion of small­pox. So far, it is the only erad­i­cat­ed in­fec­tious human disease.

Answers distribution

smallpox
leprosy
cholera
typhus
answers
flagCzech Republic
83%
8%
0%
8%
12
flagBelgium
83%
0%
16%
0%
12
flagAustralia
81%
12%
6%
0%
16
flagIndia
78%
6%
6%
5%
131
flagRepublic of Ireland
72%
5%
13%
8%
59
flagthe United States
71%
12%
7%
7%
432
flagCanada
66%
10%
12%
10%
50
flagUkraine
64%
23%
0%
11%
17
flagthe Philippines
64%
11%
17%
5%
17
flagItaly
62%
8%
12%
16%
24
flagthe United Kingdom
60%
13%
12%
11%
284
flagthe Netherlands
59%
18%
5%
16%
37
flagGermany
55%
14%
14%
15%
134
flagNorway
55%
11%
16%
16%
18
flagFrance
54%
12%
9%
19%
31
flagPoland
53%
14%
18%
13%
10412
flagUnknown
50%
11%
20%
18%
54
flagSweden
38%
15%
23%
15%
13
flagSpain
30%
23%
23%
23%
13
flagLithuania
23%
23%
38%
15%
13

Gender

men50%
women50%
smallpox
50%
50%
leprosy
16%
15%
cholera
18%
20%
typhus
14%
13%

Language versions

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answers
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Which infectious human disease has been eradicated?
868
69%

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Illustration: Andres Rueda
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