Estimating malaria transmission risk through surveillance of human–vector interactions in northern Ghana

Parasites & Vectors

Table 4 Sporozoite rates and entomologic inoculation rates of Anopheles gambiae sensu lato collected by human landing catches in the control and indoor residual spraying intervention communities, June 2017–April 2019

Period of study	Number of mosquitoes analyzed	Sporozoite rate (%)	Directly measured^a		HBO and parity adjusted^b
Period of study	Number of mosquitoes analyzed	Sporozoite rate (%)	Mean monthly EIR	Annual^c EIR	Annual^c EIR
IRS communities
Year 1	1209	0.17	0.32	3.19	1.64
Year 2	1133	0.35	0.91	9.08	2.06
Mean		0.26	0.61	6.14	1.85
Control communities
Year 1	2574	0.47	1.37	13.66	13.34
Year 2	2151	0.51	1.88	18.86	13.80
Mean		0.49	1.62	16.26	13.57

EIR Entomological inoculation rate, HBO human behavior observation
^aDirectly measured EIR is estimated with directly measured biting rates from human landing catches
^bHBO- and parity-adjusted EIRs refers to EIR estimation with HBO- and parity-adjusted biting rates
^cAnnual EIR = sum of monthly EIRs

ISSN: 1756-3305