Tuesday assorted links

1. “Our findings indicate that the repeal of nonmedical exemptions in California was only partially effective in improving vaccination coverage, and may have led parents to substitute between medical and nonmedical exemptions, leading to a net decline in total exemptions of just 1 percentage-point.”  Link here.

2. Does price-fixing benefit corporate managers?

3. Support for freedom of the press is falling in Africa.

4. Russ Roberts interviews Mary Hirschfeld.

5. More on how Newark turned it schools around.

6. Has a ransomware attack shut down the Baltimore city government?