| | | HI test against mouse sera of following viruses gives negative results: | | chikungunya, o'nyong nyong, Middleburg, Ndumu, Semliki Forest virus, Sindbis, Ntaya, Wesselsbron, Usutu, yellow fever, Uganda S, Dakar bat, West Nile, Zika, Spondweni, Entebbe bat, dengue 1. | | Bunyamwera, Ilesha, Shokwe. | | Bwamba, Pongola. | | Simbu, Ingwavuma. | | Lumbo, Chenuda, Mossuril, Nyamanini, Lagos bat, Nyando, Olifantsvlei, African horse sickness, Tataguine, Nairobi sheep disease, Thogoto, Witwatersrand. | | In NT tests, negative reactions were found to the following sera against 63 LD50 of YM 50/64. | | |
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| | Group A: | | Group Bunyamwera: | |
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| Chikungunya | (>2.2) | Bunyamwera | | O'nyong nyong | (2.3) | Ilesha | (>2) | | Middelburg | (1.9) | Germiston | (>3.9) | | Ndumu | | | | Semliki | (>2.5) | Group Bwamba: |
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| Sindbis | (>5.5) | Bwamba | (>2.5) | | Group B: | | Pongola | (>2.5) |
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| Ntaya | ( 2.7) | | | Wesselsbron | (>2.3) | Group Simbu: |
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| Usutu | | Simbu | (>2) | | Yellow fever | (>3.2) | | | Uganda S | (>2.8) | Non groups: |
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| Dakar bat | ( 2.3) | Chenuda | (>2.1) | | West Nile | ( 3.2) | Lumbo | (>3) | | Zika | (>2.4) | Mossuril | (>1.5) | | Spondweni | (>3.9) | Nyamanini | ( 2) | | Entebbe bat | | Nyando | ( 2.5) | | | | Lagos bat | | | ( ): Homologous neutralization by reference sera; shown as LNI expressed in dex; blank = not determined |
| | CF test (EAVRI, Entebbe): Homologous titre = 160/80 | | In screening tests, YM 50 antigen gave negative results with following hyperimmune fluids from mice: | | Bunyamwera, Germiston, Ilesha, Shokwe | | Bwamba, Pongola. Simbu, Ingwavuma. | | Quaranfil, Chenuda, Nyando, Eretmapodites 147, African horse sickness, Tataguine, Lagos bat, Lebombo, Lumbo, Matruh, Mossuril, Nairobi sheep disease, Nyamaninni, Olifantsvlei, Tanga, Thogoto, Witwatersrand, Congo, AMP 5438, AR 1169, AR 1225, AR 1275, Arumowot, Acado. | | Okola virus is related to Tanga virus by IFA. Only Okola virus reacted by IFA with antibodies to Anhembi, Birao, Cache Valley, Northway, Tensaw, Tlacotalpan and Santa Rosa viruses. Antibody to Tanga and Okola viruses did not react by IFA with antigens of these viruses [6] . | | |
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