My son tells me he and his colleagues have encountered infected patients with few or no symptoms, some of them being high risk from other problems. He has also said the worst sufferers, for the most part, seem to be blood type A, which may or may not be a factor. He also mentioned inability to metabolize specific vitamins, but no certainty of before or after. We didn't have time to get into details, he wanted to know how his kids were doing, and of course I told him they are a PITA. Got a chuckle. He's the father of the twins and hasn't seen them for two weeks. He and his wife, an RN, are staying at first class hotel, which belongs to one of my longtime friends. On the cuff, along with about 20 other doctors and 30 or so nurses. Unfortunately, they can't enjoy it, just coming back to their rooms with take out, showering, changing and passing out from exhaustion before going back to work. His wife makes a point of speaking with the kids once a day, he doesn't have that luxury. There older kids have been in and out for meals, checking on siblings and cousins, volunteering with meals on wheels, delivering meds, and similar activities. Good kids.