Not the OP, but my whole family also caught this flu (type A) during Christmas week, followed by bronchitis. We've had coughs for going on 3-4 weeks.

I take 2,000 IUs of extra Vitamin D a day and we all got the flu shot in September. From what I've read, this year's flu shot is largely ineffective.

This is a brutal flu. If you catch it, stay home and get rest.