I'm so happy a study like this has finally been completed. It echos
what many have been saying for years, that vaccines are just not
needed yearly. Immune systems aren't forgetful and don't need yearly
reminders. It would be wonderful if they continued this study to see
how much longer the vaccine lasts.

@Suki - about your Hubble, from your description he sounds like a
non-responder, which would mean that he will never acquire adequate
levels of antibodies against CDV. If that was the case, it won't
matter how many vaccines you give; he will never be protected. A weak
responder would eventually develop an adequate response after more
vaccines. Have you ever ran a titer soon after vaccination (2-4 weeks
after) to see how he is responding?

Jackie

[Posted in FML 7505]