Skip to main content

Table 2 Human biting rate (HBR), sporozoite indices (SI) and entomological infection rate (EIR) for each vector in each site

From: Malaria case in Madagascar, probable implication of a new vector, Anopheles coustani

Sites Entomological indices An. arabiensis An. coustani An. funestus An. mascarensis
HEXT HINT HEXT HINT HEXT HINT HEXT HINT
Site A No 45 23 133 28 0 2 90 62
HBR 4.50 2.30 13.30 2.80 0 0.20 9.00 6.20
SI 0.04
EIR 0.11
Site B No 10 4 51 15 3 3 43 19
HBR 1.00 0.40 5.10 1.50 0.30 0.30 4.30 1.90
Site C No 49 10 84 39 5 2 70 14
HBR 4.90 1.00 8.40 3.90 0.50 0.20 7.00 1.40
Site D No 2 2 57 5 4 1 12 1
HBR 0.20 0.20 5.70 0.50 0.40 0.10 1.20 0.10
Site E No 1 2 363 34 98 36 71 13
HBR 0.10 0.20 36.30 3.40 9.80 3.60 7.10 1.30
Site F No 26 3 461 10 27 1 33 0
HBR 2.60 0.30 46.10 1.00 2.70 0.10 3.30 0
SI 0.01
EIR 0.01
Site G No 4 1 505 95 9 14 37 4
HBR 0.40 0.10 50.50 9.50 0.90 1.40 3.70 0.40
Site H No 0 0 368 20 8 2 85 8
HBR 0 0 36.80 2.00 0.80 0.20 8.50 0.80
SI 0.01 0.05
EIR 0,01
Site I No 18 21 689 146 5 36 3 25
HBR 2.25 2.63 86.13 18.25 0.63 4.50 0.38 3.13
SI 0.03
EIR 0.21
  1. HBR human biting rate, the number of bite per person per night; SI sporozoite indices, the proportion of individual positive with Plasmodium among the total individuals caught for one species, EIR entomological infection rate: the number of infecting bite per person per site per month. In April 2013, one sample among the 253 primary vectors, An. funestus, was confirmed to be infected with P. falciparum. This specimen was captured indoors (Site I). In March 2014, no primary vector was positive but four An. coustani were positive: two were positive with P. vivax and two with P. falciparum. These specimens were captured indoors (Site A) and outdoors (Sites F, H). Italics face indicates that HBR is very high for An. coustani mainly outdoors