The discovery that Wakefield's study was a lie has an impact on a lot more research than just disease control because it discredited scientific discovery as a whole. It has made the people more wary of scientific publications and developments, especially if they're groundbreaking. If people don't trust scientists, they won't give them funding. If scientists don't have as many resources, they can't work at maximum efficiency, and lack of efficiency means a lack of production of results.
Please read her full post here.