As in most pathogenic diseases, there is the risk of transmission to a sex partner or to a fetus. From my reading to date and forming my own conclusions thus far, in my humble and very uneducated opinion, there are so many variables that determine whether or not someone contacts Lyme from another. Morgellons, whatever it is, as well. Why is is that most people who have Morgellons also have been tested positive for Lyme?
Beginning with genetic predisposition and ending with compromised immune system, so much in-between matters. Those who are fortunate not to have been directly exposed to the pathogen and have strong immune systems probably won't get it or any other diseases in the household. Prior exposure and thus antibodies specific to the organisms would make someone a carrier to a degree or not at all.
The animals we have in our homes in my opinion are walking time
bs for us as they bring in the worms, fungi, bacteria and we let them in our beds, lick our faces (mouths too) walk on the kitchen countertops where we eat and prepare food and more.
I know people with pets love them very much, but they really have to pay attention to reality and take the necessary precautions.
Kritters