hereAn AstraZeneca spokeswoman said the pause was part of a standard review process which occurs in trial if there is a 'potentially unexplained illness' reported in any trial subject, and that the subject's illness could also be coincidental."As part of the ongoing randomised, controlled global trials of the Oxford coronavirus vaccine, our standard review process was triggered and we voluntarily paused vaccination to allow review of safety data by an independent committee," the spokeswoman said in a statement."This is a routine action which has to happen whenever there is a potentially unexplained illness in one of the trials, while it is investigated, ensuring we maintain the integrity of the trials."In large trials illnesses will happen.