A California bill that would allow students to opt out of mandatory school vaccinations only if they have a medical condition that justifies an exemption is one step closer to becoming law, though it still has a long way to go. The bill was introduced in the California Senate in response to a measles outbreak at Disneyland in late December that's now linked to almost 150 infections. Among several hundred supporters and protesters outside the Capitol building in Sacramento on Wednesday, the bill sparked a debate about individual rights and responsibilities.
