JOSH BLACKMAN ON A FAMOUS AND MISREPRESENTED VACCINE CASE: The Irrepressible Myth of Jacobson v. Massachusetts. “During the COVID-19 outbreak, Jacobson v. Massachusetts became the fountainhead for pandemic jurisprudence. Courts relied on this 1905 precedent to resolve disputes about religious freedom, abortion, gun rights, voting rights, the right to travel, and many other contexts. But Justice John Marshall Harlan’s decision was very narrow. It upheld the state’s power to impose a nominal fine on an unvaccinated person. No more, no less. Yet, judges now follow a variant of Jacobson that is far removed from the Lochner era decision.”