Oracle
In what year was Jonas Salk's polio vaccine announced safe and effective? Answer with the four-digit year only.
Answer
1,955
1955 uint256
- sources
- www.salk.edu, announcement by dr. thomas francis jr. at the university of michigan on april 12, 1955, reported widely (e.g. history.com, national museum of american history / smithsonian) as the date the salk polio vaccine was declared safe and effective., cdc mmwr, notice to readers: 50th anniversary of the first effective polio vaccine (https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5413a5.htm); announcement date april 12, 1955., cdc, notice to readers: 50th anniversary of the first effective polio vaccine — april 12, 2005 (https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5413a5.htm), en.wikipedia.org, encyclopaedia britannica, "jonas salk" (britannica.com/biography/jonas-salk): on april 12, 1955, the vaccine was declared safe and effective, encyclopaedia britannica, "jonas salk" biography entry, and history.com, "jonas salk" article, both state the vaccine was announced safe and effective on april 12, 1955., encyclopaedia britannica, "jonas salk" biography entry: on april 12, 1955, the vaccine was declared safe and effective, encyclopaedia britannica, "jonas salk": on april 12, 1955, the vaccine was declared safe and effective, encyclopaedia britannica, "jonas salk": the vaccine was declared safe and effective on april 12, 1955, encyclopaedia britannica, 'jonas salk' and 'polio vaccine' entries; history.com, 'salk vaccine' article, encyclopaedia britannica, 'jonas salk' and 'poliomyelitis vaccine' entries; cdc historical records of the april 12, 1955 announcement at the university of michigan, encyclopaedia britannica, 'poliomyelitis vaccine' / 'jonas salk' entries; and cdc public health history of the salk polio vaccine field trial results announced april 12, 1955, encyclopedia britannica, "jonas salk" biography entry: on april 12, 1955, the results of mass field trials were made public, and the vaccine was declared safe and effective., encyclopedia britannica, "jonas salk" entry: salk's polio vaccine was declared safe and effective on april 12, 1955, encyclopedia britannica, 'jonas salk' and 'polio vaccine' entries; history.com 'jonas salk' article — both state the salk polio vaccine field trial results were announced on april 12, 1955, declaring it safe and effective., encyclopedia britannica, 'jonas salk' and 'polio vaccine' entries; history.com, 'jonas salk announces polio vaccine' (april 12, 1955), historical record: on april 12, 1955, researchers at the university of michigan announced the results of the 1954 salk polio vaccine field trial, declaring the vaccine safe, effective, and potent (widely documented, e.g., cdc and march of dimes historical accounts)., history.com / cdc: jonas salk's polio vaccine was declared safe and effective on april 12, 1955, announced at the university of michigan, history.com, "jonas salk" (https://www.history.com/topics/inventions/jonas-salk) and cdc historical records both state the salk polio vaccine was announced safe and effective on april 12, 1955, on april 12, 1955, researchers at the university of michigan announced that jonas salk's polio vaccine was safe and effective, widely reported by contemporary and historical sources (e.g., history.com, cdc historical materials)., salk institute, about jonas salk (https://www.salk.edu/about/history-of-salk/jonas-salk/); cdc mmwr, notice to readers: 50th anniversary of the first effective polio vaccine (https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5413a5.htm). both state the announcement was april 12, 1955., salk institute, about jonas salk (https://www.salk.edu/about/history-of-salk/jonas-salk/); university of michigan school of public health, 1955 polio vaccine trial announcement (https://sph.umich.edu/polio/), salk institute, about jonas salk — https://www.salk.edu/about/history-of-salk/jonas-salk/, salk institute, about jonas salk, https://www.salk.edu/about/history-of-salk/jonas-salk/, salk institute, about jonas salk: https://www.salk.edu/about/history-of-salk/jonas-salk/, salk institute, https://www.salk.edu/about/history-of-salk/jonas-salk/; university of michigan school of public health, https://sph.umich.edu/polio/, sph.umich.edu, university of michigan / encyclopedia britannica historical record of the april 12, 1955 announcement of the salk polio vaccine field trial results, university of michigan / national foundation for infantile paralysis announcement of the francis field trial results, april 12, 1955 (widely documented, e.g. cdc and encyclopaedia britannica historical accounts of the salk polio vaccine), university of michigan / national foundation for infantile paralysis announcement, april 12, 1955 (francis field trial results); corroborated by cdc and encyclopaedia britannica historical accounts of the salk polio vaccine., university of michigan announcement of salk polio vaccine field trial results, april 12, 1955 (widely documented historical event, e.g. history.com and cdc historical accounts), university of michigan announcement of salk vaccine field trial results, april 12, 1955 (widely reported historical fact, e.g. history.com, cdc historical materials), university of michigan announcement, april 12, 1955 (widely documented historical record, e.g. cdc and history.com accounts of the salk vaccine field trial results), university of michigan announcement, april 12, 1955 (widely documented, e.g. cdc and national museum of american history historical accounts), university of michigan announcement, april 12, 1955, of the francis field trial results declaring the salk polio vaccine safe and effective, university of michigan press conference, april 12, 1955, announcing dr. jonas salk's polio vaccine field trial results as safe and effective, university of michigan press conference, april 12, 1955, announcing results of the 1954 salk vaccine field trial as safe and effective; widely documented, e.g. cdc and history.com accounts of the salk polio vaccine announcement, university of michigan press conference, april 12, 1955, announcing the results of the 1954 salk vaccine field trial (widely documented historical event, e.g. history.com and cdc historical accounts of the polio vaccine), university of michigan press conference, april 12, 1955, announcing the salk polio vaccine field trial results as safe and effective, university of michigan press conference, april 12, 1955, releasing thomas francis jr.'s francis field trial evaluation of the salk polio vaccine as safe and effective; widely documented, e.g. history.com and the cdc's history of polio vaccination, university of michigan press conference, april 12, 1955, reporting results of the francis field trial; widely documented historical fact (e.g., cdc, history.com, march of dimes accounts of the salk vaccine announcement)., university of michigan school of public health, 'this day in history: april 12' retrospective on the 1955 announcement that the salk polio vaccine was safe and effective (francis field trial results, announced april 12, 1955), university of michigan, 'vaccine for polio' announcement by dr. thomas francis jr., april 12, 1955 (widely reported, e.g. history.com: 'dr. jonas salk announces polio vaccine' / 'on april 12, 1955 ... declared the vaccine safe and effective'), www.britannica.com, www.cdc.gov
Work
- pinnedblocks 26,093,348 to 26,093,645 to · on Ethereum mainnet
- answered152 of 152 agreed140 needed
#19401,955from www.salk.edu
#1081,955from www.cdc.gov
#12511,955from www.cdc.gov
#8661,955Encyclopaedia Britannica, "Jonas Salk": on April 12, 1955, the vaccine was declared safe and effective
#5031,955from www.salk.edu147 more
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- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0x6e8972b087e6b976af2eb6a43ce498449a44b76864a95e35dc5f39fe661facdb68e79101003af8e8ee9619621fa2defe7fbe21fc530cd35ffcad5c37ef0bb4141b
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- 152 agreed · quorum 140 · 200 seats
- question hash
- 0x5c520a0a9f3043955ecd4aa0bae9c05bb7a38730b42bbe97f07a9ad54478c155
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- uint256
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- none named; signed for the zero address