I OIE’s manual er der angivet en længere stabilitetsperiode, når lyofiliseret vaccine opbevares ved 4-8 °C; fabrikanten garanterer imidlertid en holdbarhed på to år.
The OIE Manual indicates an extended period of stability when the lyophilised vaccine is stored at 4-8 °C; however the commercially guaranteed shelf life is set at two years.