Table 2. Years 1988-2002a summary of experimental FIV vaccines.
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| Vaccine type | Protective efficacy |
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| Conventional vaccines | |
| Inactivated whole virus | Homologous and heterologous protection |
| Inactivated FIV-infected cells (ICV) | Homologous and heterologous protection |
| Subunit vaccines | |
| Purified p24 (Gag core) protein | No protection |
| Synthetic Env V3 (variable-3 domain) peptide | No protection |
| Synthetic Env C2 (constant-2 domain) peptide | No protection |
| Baculovirus expressed SU gp100 | No protection but a decrease in virus load observed in one study |
| E. coli expressed SU p100 | No protection but a decrease in virus load observed in one study |
| E. coli expressed SU V3 | No protection |
| Feline herpresvirus-vectored env | No protection |
| Adenovirus-vectored env | No protection |
| Canarypox virus-vectored gag-pol-env (+/- ICV) | No protection |
| DNA vaccines | |
| Proviral FIVPET DRT DNA (+/- feline IFNg DNA) | Some homologous protection but not repeatable |
| Proviral FIVPPR DVIF | Homologous protection |
| Proviral FIVTM2 DAP1 DNA | Homologous protection |
| Proviral FIVGL8 DRT DNA (+/- feline IL-12 and/or IL-18 DNA) | No protection |
| Proviral FIVGL8 DIN DNA (+/- feline IL-12 and/or IL-18 DNA) | Minimal protection against heterologous FIVPET but only decrease in viral load against homologous FIVGL8 |
| FIVZ2 gp140 DNA MIDGE (+/- feline IL-12 DNA MIDGE) | Homologous protection |
| FIVZ2 gp140 DNA MIDGE (+/- feline IL-16 DNA MIDGE) | No homologous protection but decrease in viral load |
| Plasmid pC1-p24 DNA (+/- recombinant SU gp100) | No protection |
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