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Vaccinations (INDEX; Watchtower Online Library)
Were vaccinations ever prohibited by Jehovah's Witnesses? (Jehovah's Witnesses - Setting the Record Straight)
Some critics have erroneously claimed that publications of Jehovah's Witnesses prohibited the use of vaccines from 1931 to 1952, and that they were permitted later...
"Jehovah's Witnesses have no objection to vaccines in general. Some vaccines contain minor blood fractions, and use of these is a matter of personal choice." (JW-media.org)