"Studies" appear almost immediately

Reuters Reports British Counter MMR-Vax Study Within Hours Today  

When Wakefield’s latest paper came out, which strengthens the association of the MMR vacine to autism, last Sunday, Reuters took two full days to report it adding it’s own discounting spin.  No other American press service reported it.

However, within hours of it’s release, Reuters had it’s report out on a different study challenging Wakefield’s finding. 

Measles vaccines: a review of adverse events

The rapidity and clarity of this same community's debunking of the spurious associations with Crohn's disease and autism suggests that those charged with vaccination programmes have learned from past mistakes. During 30 years of worldwide use, measles vaccination has proven to be one of the safest and most successful health interventions in the history of mankind. It is not a 'perfect' vaccine, but the benefits of measles vaccination far outweigh the risks even in countries with low incidence of measles and high rates of measles vaccine coverage.