Biology Reference
In-Depth Information
Figure 1.10, cont'd
arranged to classify areas at risk into three categories: malaria free, unstable
(<0.1 cases per 1000 p.a.) or stable (≥0.1 cases per 1000 p.a.) transmission.
These values were based on the Global Malaria Eradication Programme
classifications; API values of <0.1‰ were considered a reliable indication to
cease IRS and to shift to the consolidation phase of eradication (
Pampana,
1969
;
Yekutiel, 1980
;
Guerra et al., 2008
;
Hay et al., 2008
). This followed
a transition from a cut off of 0.5 cases per 1000 p.a., which was deemed
less reliable because malaria would at times return after the cessation for
spraying at an API of 0.5‰ (
Guerra et al., 2008
). This was likely because
