I have read these studies in Iran and Pakistan earlier today, plus ones in Argentina and Paraguay as well. In Diseases of Poultry they discuss how studies have been done in California of backyard chicken owners having MG in their flocks causing outbreaks in a nearby commercial poultry houses. I also was reading that MG can live on hair for 3 days, rubber and cloth for 2-3 days, and in the nasal passages of people for 24 hours. They also say that an MG test can be negative on a hen that has chronic long-term MG. Much of the disease spread can be traced to disease inspectors which is really scarey.Sure can. Literature studies back it up. Discussed it in a thread here too. https://www.backyardchickens.com/t/600566/mg-certified-hatcheries-breeders/30#post_10211094
It's like herpes viruses. Everyone and everything has been exposed at some point. Mycoplasma is ubiquitous in the environment,