Vector competence, vectorial capacity of Nyssorhynchus darlingi and the basic reproduction number of Plasmodium vivax in agricultural settlements in the Amazonian Region of Brazil

Table 2 Geographical locality, human population, annual parasite index (API) of P. vivax, remaining susceptible population (S_H), prevalence of P. vivax in Ny. darlingi, and daily human biting rate per person (HBR) calculated using data of 216 h human landing catch (HLC) in the peridomestic environment of 36 houses in rural settlements of five municipalities in the Brazilian states of Acre, Amazonas and Rondônia

Municipality (State)^a	Human population	API^b P. vivax	S ^c_H	Prevalence of P. vivax infection in mosquito (%)^d	HBR ^e_t
Mâncio Lima (AC)	18,708	241	11,852	0.243	33 ± 1.50
Lábrea (AM)	40,969	279	29,530	0.246	66 ± 2.41
Cruzeiro do Sul (AC)	80,168	236	67,400	1.5	23 ± 1.18
São Gabriel da Cachoeira (AM)	48,760	150	41,410	2.9	52 ± 4.83
Machadinho D’Oeste (RO)	19,367	144	16,631	3.96	39 ± 1.21

^aAC (Acre state), AM (Amazonas state), RO (Rondônia state)
^bAnnual parasite index = proportion of individuals with circulating malaria parasites
^cS_H = remaining susceptible human population [for details see “Methods” and Eq. (6)]
^dObtained by RT-PCR from single field collected mosquitoes
^eHuman biting rate, the per capita number of bites per night, calculated with the data obtained from the HLC based on 6-h collection

ISSN: 1475-2875