Daughter got sick with the flu last week and missed school on Friday. Son did not get sick last week but obviously had a lot of contact with daughter. Son visited grandparents in their nursing home on Sunday (outdoors on the grounds because kids are not permitted in the facility because of swine flu concerns). Daughter did not visit, obviously. Yesterday, son became sick, probably with swine flu. Last night, grandmother became sick with swine flu. This is a serious situation because she is elderly, is losing weight and is in frail health, having been hospitalized or in rehab for over a month with a suspected spine infection. Is there any chance my son transmitted swine flu to his grandmother even though he wasn't sick when he visited and became ill 3 days after the visit? Should we take the grandmother to an emergency room to get her some Tamiflu or whatever, or should we wait for signs of breathing difficulties? Sorry I have to ask these questions here, but I'm just the daughter-in-law so I can't exactly parachute in and start calling the shots. Armed with the right information, however, I can do some spirited nagging sessions.