You know, that’s a good question. I’ve been in the D3. K, zinc, C, Quercitin regimen since early on. I’ve been tested several times for trips, but no positives, and never any symptoms. One of my sons stayed with us for a couple of days and coughed and sneezed all over us, and tested positive the next day. My wife tested negative a few days later. So, maybe I’ve had it and not known that I’ve had it? Maybe I’ll get on some IVM for a few days. I’ve stockpiled.