The WTB&TS used to disfellowship people who received blood transfusions.
The changeover to "self-disfellowshipping" (or 'disassociation") really got a push when in 1997 the government of Bulgaria told the WTB&TS that they would not be allowed to operate freely within Bulgaria's borders because of the policy of disfellowshipping transfusion recipients.
The WTB&TS immediately switched into "lying whore" mode and promised the Bulgarians that they would never do such a thing. the bugarians believed them, much to the distress of the citizens of that country who now look forward to an imaginary eternal life in an imaginary New World.