At Spiked-Online, Michael Fitzpatrick details the latest developments in the collapsed U.K. litigation campaign aimed at proving a causal link between measles/mumps/rubella vaccine and autism in children. Dr. Andrew Wakefield, a leading proponent of such a link, has now dropped a libel suit arising from criticism of his role. Earlier coverage here, here and here; see also here and here.

Update: See also Paul Offit's piece on vaccine exemptions in Saturday's Wall Street Journal.