Fig. 4From: Synergy and timing: a concurrent mass medical campaign predicted to augment indoor residual spraying for malariaThe fractional improvement \(\chi _s\) of infection prevalence reduction, defined in Eq. 4, as a function of the time of MDA deployment, \(\tau _0\). An impact of \(\chi _s=2\) indicates the scheduling is twice as powerful in suppressing infections compared to isolated campaigns. The MDA timing is adjusted to that around a fixed IRS deployment scheduled at \(\tau =0\), as indicated. A nearly synchronous deployment is most effective in suppressing infections/infectiousness in the populace, a trend even more apparent for high \(R_0\). Nearly double the potency is possible in a high transmission setting with good campaign schedulingBack to article page