Calculating cumulative incidence of deterministic continuous model in odin.dust for use in mcstate

[nputney4]

Is there a convenient way to calculate cumulative incidence in the case of a deterministic continuous SIR model? Seeing that the comparison function does not have access to states at previous time points and the input into 'particle_deterministic$new()' is the model itself, it seems that cumulative incidence would have to be defined within the model but I cannot figure out how.

I would appreciate any help with this issue, thank you!

Also, I was wondering if there exists any sort of 'support group' for odin/odin.dust/mcstate where users/developers share their expertise?