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Table 5 Death and symptom number of tilapia response to seven serotype Ia fish isolates and seven serotype Ia and III human isolates

From: Genetic and pathogenic difference between Streptococcus agalactiae serotype Ia fish and human isolates

Bacterial Source Serotype Strain Repeata Symptom Mortality
Hemorrhage of pectoral fin Hemorrhage of gill Viscous black and common ascites Ia IIb
No. Mean No. Mean No. Mean (%) No. Mean Bacterial dose (1 × 108 cfu) Mean (%)
No. % No. %   No. %
Fish isolates Control 1 0/6 0/6 0 0/6 0/6 0 0/6 0/6 0 0/6 0/6 0 0 16.7 ± 0
2 0/6 0/6 0/6 0/6
Ia 886 1 0/6 0.5/6 8.3 2/6 2.5/6 41.7 5/6 4/6 66.7 6/6 6/6 100 3.1–3.8 100 ± 0
2 1/6 3/6 3/6 6/6
900 1 2/6 3/6 50 3/6 3.5/6 58.3 5/6 5.5/6 91.7 6/6 6/6 100 2.5–2.6 100 ± 0
2 4/6 4/6 6/6 6/6
912 1 0/6 0.5/6 8.3 0/6 0.5/6 8.3 2/6 1.5/6 25 5/6 3.5/6 58.3 2.1–3.1 54.2 ± 25.0
2 1/6 1/6 1/6 2/6
948 1 3/6 2.5/6 41.7 3/6 2.5/6 41.7 4/6 4/6 66.7 6/6 5.5/6 91.7 3.1–3.8 91.7 ± 16.7
2 2/6 2/6 4/6 5/6
953-1 1 0/6 1/6 16.7 2/6 1.5/6 25 2/6 1.5/6 25 6/6 6/6 100 2.5–2.6 100 ± 0
2 2/6 1/6 1/6 6/6
954 1 0/6 1/6 16.7 3/6 3/6 50 6/6 4.5/6 75 6/6 5/6 83.3 2.1–3.1 54.2 ± 25.0
2 2/6 3/6 3/6 4/6
1004 1 1/6 0.5/6 8.3 1/6 1/6 16.7 5/6 4/6 0 6/6 5/6 83.3 2.1–3.4 95.8 ± 8.3
2 0/6 1/6 3/6 0 4/6
Human Isolate Control 1 0/6 0/6 0 0/6 0/6 0 0/6 0/6 0 1/6 1/6 16.7 0 16.7 ± 0
2 0/6 0/6 0/6 1/6
Ia G91 1 0/6 0/6 0 0/6 0/6 0 1/6 0.5/6 8.3 1/6 0.5/6 8.3 2.3–2.9 8.3 ± 9.62
2 0/6 0/6 0/6 0/6
G108 1 0/6 0/6 0 0/6 0/6 0 1/6 0.5/6 8.3 0/6 0.5/6 8.3 1.8–2.2 16.7 ± 13.6
2 0/6 0/6 0/6 1/6
G110 1 0/6 0/6 0 0/6 0/6 0 0/6 0.5/6 8.3 1/6 1/6 16.7 2.1–3.0 8.3 ± 8.34
2 0/6 0/6 1/6 1/6
III G116 1 0/6 0/6 0 0/6 0/6 0 0/6 0/6 0 2/6 1/6 16.7 1.9–2.6 29.2 ± 21.0
2 0/6 0/6 0/6 0/6
G1 1 1/6 0.5/6 8.3 1/6 0.5/6 8.3 0/6 0/6 0 1/6 0.5/6 16.7 1.3–2.0 16.7 ± 13.6
2 0/6 0/6 0/6 0
G78 1 0/6 0/6 0 0/6 0/6 0 0/6 0/6 0 0 0/6 16.7 1.4–1.9 12.5 ± 16.0
2 0/6 0/6 0/6 1
G102 1 0 0/6 0 0/6 0/6 0 0/6 0/6 0 0 0.5/6 16.7 1.3–2.1 12.5 ± 16.0
2 0 0/6 0/6 0
  1. a6 fish were used in each repeat
  2. bSix fish were used for each isolate and each data were average of four repeats