update_peak_immunity

class update_peak_immunity(people, inds, imm_pars, imm_source, offset=None, infection=True)

Update immunity level

This function updates the immunity for individuals when an infection is cleared or vaccination occurs.

• individuals that are infected and already have immunity from a previous vaccination/infection have their immunity level;

• individuals without prior immunity are assigned an initial level drawn from a distribution. This level

  depends on whether the immunity is from a natural infection or from a vaccination (and if so, on the type of vaccine).

Parameters:

• people – A people object

• inds – Array of people indices

• imm_pars – Parameters from which to draw values for quantities like [‘imm_init’] - either sim pars (for natural immunity) or vaccine pars

• imm_source – index of either genotype or vaccine where immunity is coming from

Returns: None