Further to the previous sceptical post it seems that the unfortunate Waikato family were not suffering from botulism. It is puzzling as to how the symptoms described (e.g. thrashing around) fit with flaccid paralysis typical of botulism. But again we only have the ‘facts’ relayed to us by Stuff.
The meat, or contaminants therein, seems to have been excluded as a cause of the symptoms, which might be a bit premature.
It will be interesting to read the final results.