Now a professor emeritus at George Mason University, Williams has taught at Temple University; California State University, Los Angeles; and other universities.

Williams也在坦普尔大学、加州州立大学洛杉矶分校和其他大学任教。

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Dr Brendan Mason, a consultant epidemiologist with PHW, said he could not comment on Gareth Williams' death as it was still being investigated.

BBC: Swansea measles epidemic: Man who died had measles