This second part of a two-part article moves ahead in showing how the East German Ministry for State Security (Stasi) came to play a key role in the disinformation campaign launched by the Soviet State Security Committee (KGB) in 1983 regarding the origins of the Human Immunodeficiency Virus (HIV) and the Acquired Immune Deficiency Syndrome (AIDS). The KGB launched the campaign itself, but in the mid-1980s it sought to widen the effort by enlisting the cooperation of intelligence services in other Warsaw Pact countries, especially the Stasi. From the autumn of 1986 until November 1989, the Stasi played a central role in the disinformation campaign. Despite pressure from the U.S. government and a general inclination of Soviet leader Mikhail Gorbachev to curtail the campaign by the end of 1987, both the KGB and the USSR's official Novosti press agency continued until 1989 to spread false allegations that HIV was a U.S. biological weapon. Even after the KGB curtailed its disinformation in 1989, the Stasi continued to disseminate falsehoods, not least because it had successfully maintained plausible deniability regarding its role in the campaign. The Stasi worked behind the scenes to support the work of Soviet–East German scientists Jakob Segal and Lilli Segal and to facilitate dissemination of the Segals’ views in West Germany and Great Britain, especially through the leftwing media, and to purvey broader disinformation about HIV/AIDS by attacking U.S. biological and chemical weapons in general.