In the last 3 weeks our family have been hit by colds, a nasty flu/throat/ear type virus and a vomiting bug. We are a family of 4 and the kids at 5 mo and 2.8. I know our toddler is likely to be sharing the bugs from nursery and it is the time of year to get all sorts of nasties. Can anyone recommend how we can boost our immune systems to be in the best shape we can to fight things off a little better? We take vitamins and have a good diet but we are all very run down and one bug after another and the sleep deprivation is taking it's toll! Any advice gratefully received.