If you tune in to NPR for a news update you probably heard a bit about some Kentucky farms being plagued by a fungus called "late blight". We didn't feel it was thoroughly explained so here is our best effort to put your minds at ease about the tomatoes you will see in your shares this week!
Late blight is caused by a fungus-like organism that affects the leaves and stem of the plant, causing them to wither. It really has no affect on the fruit (the tomatoes themselves), except that with withered leaves and stems the fruit gets sunburned and ceases growing. It poses no risk to humans, except where the farmer's wallet is concerned.