difference of protocal of interferon -- why?

[Hideyo Yamamoto]

One thing I noticed that felk and fiv treatment, they suggest every day dosage for 5 consecutive days and FIP, it suggest every other day.. do you know why? I read an article how every day dosage is much more effective than every other day..  but I was not sure if there is any reason why every other day is suggested for FIP – (I will also post this question to the group as well)