A few of our employees have been diagnosed with H1N1. We have posters, emails, etc regarding the flu and encouraging people to stay home if they are feeling ill. We also provide employees with a very liberal work from home policy as well as a liberal leave policy. Our problem is that co-workers of the flu-riddled employees are very upset that HR hasn't contacted them to tell them that their co-worker is out because of the flu. Of course we have HIPPA concerns. Any advice on what we can say to specific employees who work alongside of someone who has been diagnosed with H1N1?