What's the big deal? If they are vaccinated, the symptoms ought to be mild. If 95% of the passengers were vaccinated, very few other will likely test positive. I'm not sure I see the issue here? What am I missing? Not sure who's statement it is in the article, the writer or if they are parroting someone else, but as they say, "these cases are not unexpected"
I am curious that if it's just these 2 people, then what is unique about them? What vaccine did they have, and when? How long ago? And so forth.