| | | | | Arthropod species & virus source(a) | Method of Infection log10/ml (b) | Incubation period (c) | Transmision by bite (d) | Assay of arthropod, log10/ml (e) |
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| Feeding | Injected | Days | °C | Host | Ratio | Whole | Organ | System |
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| | O. erraticus (adult) | SMB 8 .001/10-7; after 14 days failed to transmit by bite and no virus detected in coxal fluid. However, after 25 days titer of virus in the ticks exceeded 3.0 dex. | | | Orally infected O. erraticus (2 males, 1 female) trans. virus to SM after 30 days extrinsic incubation. First nymphs, orally inf. as larvae, failed to trans. virus individually, but trans. virus to SM when fed on mice in groups of 11-20/mouse (7). | | | | | | | | | | |
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