FIV is only transmissible through cat bites or blood transfusions with another cat. FIV is strictly in felines. Yes, but only if your infected cat bites another of your cats. A cat could be able to reach 10-12 or older if he or she is regularly vet checked and maintains a quality diet. There is no cure for this virus.
False positives do occur especially in heavily vaccinated cats.
These rarely give a false positive reading when properly conducted. It appears initial signs of infection usually show up around four weeks after infection. The FIV seems to be transmitted predominantly by bites since the virus is shed in the saliva of the infected cat. However, the virus must then directly enter the bloodstream, which is why it cannot be transmitted by just casual, everyday contact. The bite can be one-way.