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Table 1 CoV positive bats, categorized by possible influential factors - collection site, age, sex and BCI (367 bats)

From: Longitudinal study of age-specific pattern of coronavirus infection in Lyle’s flying fox (Pteropus lylei) in Thailand

Possible influential factor CoV PCR results: No. Positive / no. of tested (%)
S1 (house) S2 (pig farm) S3 (roost) ALL SITES
Agea Juvenile (J) 9/24 (37.5) 22/49 (44.9) 10/30 (33.3) 41/103 (39.8)
Adult (A) 2/20 (10.0) 13/50 (26.0) 12/194 (6.2) 27/264 (10.2)
Total 11/44 (25.0) 35/99 (35.4) 22/224 (9.8) 68/367 (18.5)
Ratio (J:A) 24:20 = 1.20 49:50 = 0.98 30:194 = 0.15 103:264 = 0.39
Sex Male 6/27 (22.2) 16/51 (31.4) 14/142 (9.9) 36/220 (16.4)
Female 5/17 (29.4) 19/48 (39.6) 8/82 (9.8) 32/147 (21.8)
Total 11/44 (25.0) 35/99 (35.4) 22/224 (9.8) 68/367 (18.5)
Mean BCIb (352 bats) All bats 1.83 1.94 2.90 2.50
Positive 1.63 1.76 2.15 1.86
Negative 1.89 2.04 2.99 2.65
  1. aJ = juvenile bat (forearm length ≤ 136 mm) A = adult bat (forearm length > 136 mm)
  2. bMean BCI is calculated from 352 bats those FA length and body mass were measured