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Table 3 SFGR minimum field infection rates (MFIR) for ticks collected from four southwestern provinces of Chungcheongnam, Chungcheongbuk, Jeollanam and Jeollabuk in the Republic of Korea during 2013 by province

From: Molecular detection of Rickettsia species in ticks collected from the southwestern provinces of the Republic of Korea

Province Species Stage No. of ticks (No. of tested pools) nPCR positive no. of Rickettsia sp. (MFIR, %)a
17 kDa ompA
Chungcheongnam H. longicornis Larvab 533 (22) 1 (0.19) 1 (0.19)
Nymphc 16 (9) 0 0
Adult (male)d 1 (1) 0 0
Adult (female)d 22 (10) 0 0
H. flava Larva 475 (17) 0 0
Nymph 30 (8) 0 0
Adult (male) 5 (2) 0 0
Adult (female) 3 (2) 0 0
I. nipponensis Larva 379 (13) 0 0
Nymph 3 (2) 0 0
Adult (male) 5 (3) 1 (20.00) 1 (20.00)
Adult (female) 6 (2) 1 (16.66) 1 (16.66)
Subtotal 1,478 (91) 3 (0.20) 3 (0.20)
Chungcheongbuk H. longicornis Larva 147 (6) 0 0
Nymph 2 (2) 0 0
Adult (female) 3 (2) 0 0
H. flava Larva 176 (5) 0 0
Nymph 1 (1) 0 0
I. nipponensis Larva 2 (1) 0 0
Subtotal 331 (17) 0 0
Jeollanam H. longicornis Larva 3,314 (70) 34 (1.03) 31 (0.94)
Nymph 103 (18) 7 (6.79) 6 (5.82)
Adult (male) 6 (4) 4 (66.66) 4 (66.66)
Adult (female) 20 (11) 2 (10.00) 2 (10.00)
H. flava Larva 401 (19) 1 (0.25) 0
Nymph 105 (18) 0 0
Adult (male) 4 (3) 0 0
Adult (female) 11 (8) 0 0
I. nipponensis Larva 18 (2) 1 (5.55) 0
Adult (male) 5 (3) 2 (40.00) 2 (40.00)
Adult (female) 8 (5) 2 (25.00) 2 (25.00)
Subtotal 3,995 (161) 53 (1.33) 47 (1.18)
Jeollabuk H. longicornis Larva 302 (11) 2 (0.66) 1 (0.33)
Nymph 2 (2) 1 (50.00) 1 (50.00)
H. flava Larva 239 (9) 0 0
Nymph 127 (11) 0 0
Adult (male) 2 (2) 0 0
Adult (female) 3 (3) 0 0
I. nipponensis Larva 2 (1) 1 (50.00) 1 (50.00)
Nymph 2 (2) 0 0
Adult (male) 1 (1) 0 0
Subtotal 680 (42) 4 (0.59) 3 (0.44)
Total 6,484 (311) 60 (0.93) 53 (0.82)
  1. aMFIR (minimum field infection rate/100 ticks) = no. of positive pools/no. of examined ticks in pools × 100, by species and stage of development
  2. b1–69 larvae/pool
  3. c1–25 nymphs/pool
  4. d1–5 adults/pool
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