“…Later, several novel approaches were tested in the feline model. Although the quest for a truly effective AIDS vaccine is years away [81], vaccination against FIV became available [82]. This vaccine (Fel-O-Vax FIV ® ) is marketed in many countries, but it might not protect cats against all field strains of subtypes A or B. Lifespan of infected cats appears similar to that of uninfected cats, but exposure to other infectious diseases drastically reduces survival of FIV positive animals [17].…”