From the NY Post:
The stricken person, Dan Barr, is a producer on the SNY broadcast crew that travels with the Mets on their regular charter flight. Barr was sent home from Pittsburgh within the past 24 hours and is currently isolated, with test results confirming or negating swine flu not expected back for at least a week.
Along those lines, Carlos Beltran is not at PNC Park and will miss his third straight game with a stomach illness, although at this point the Mets think he is suffering from a gastrointestinal virus and not swine flu.
I won't make any crazy assumptions, but you can't help but think these two illnesses are related.
Gosh, I've heard way too much about the Swine Flu.