If he is having trouble breathing and it is not going away, then he should invest in a pulse oximeter. It is a convenient tool that can monitor different vital signs, but is most commonly used to measure oxygen saturation. That hydrogen peroxide therapy that I discussed in post number 3,426 is an extremely cost-effective way to get extra oxygen into him.A family member has something similar. Difficulty breathing and its not going away. Some flu like symptoms but no fever. Apparently his doctor said that she has seen a couple cases of it. I think he might be back to work soon after almost 2 months of it.