Maybe not. There were numerous reported cases that year (2016-17) though I haven't heard of any the past couple of seasons (used to be no months w/o an "r" but September has been added to the no list).. Right now, I don't live close to the oyster source (3 h drive) so I haven't indulged since.

When I got ill, I still had a dozen live oysters I had just bought the previous day or two.. They got a reprieve. I managed to make it to a park and threw them back into the sea (same body of water the came from just a hundred or so Km further south). The area there is permanently closed to shellfish harvesting due to past industrial pollution.