My wife has to test at work whenever the household is sick, about a week ago she dropped off medicine to her brother who tested positive for the coof, now shes sick, work tested her and positive. So definitely exists, and tests seem fairly accurate. Im starting to get a cough but so far fairly mild. Taking zinc, quercetin, nac, vit d, vit c, budesonide, or cofix (iodine solution) both are nasal sprays. If it get worse might try the benadryl and loctoferin method. I assume you're in the same boat as me, no feed stores or any nearby store carry ivm anymore.