Researchers are now saying that although a member of the herpes family, CMV (cytomegalovirus) is common, how we fight it off may be a predictor of our ability to resist H1N1.
People with well-functioning immune systems may never show any signs of the virus, but it can weaken our immune system as we age. Therefore, if you've been treated for noticable symptoms of CMV, you may be at increased risk for H1N1.