| CF tests. Homologous titer = 64/16. | D 4600 gave negative results with the following immune fluids: | |
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| Group A; | chikungunya, o'nyong-nyong, Semliki Forest virus, Sindbis, Middelburg, Ndumu. | Group B; | Ntaya, Wesselsbron, Usutu, DakArY 276, West Nile, yellow fever, Zika, Spondweni, Bukalasa bat, DakArB 209, DakArY 310, Entebbe bat, Montana Myotis leukoencephalitis, dengue 1, 2, 3, 4, TH Sman, TH-36. | Bunyamwera group; | Bunyamwera, Germiston, Ilesha, Shokwe. | Olifantsvlei group; | Olifantsvlei. | Bwamba group; | Bwamba, Pongola. | Simbu group; | Simbu, Ingwavuma, Yaba 7. | California group; | Group serum, Lumbo. | Phlebotomus fever group; | Nafada. | Turlock group; | Yaba 1, M'Poko. | Nyando group; | Nyando, Eret 147 (DakArY 176). | Mossuril group; | Mossuril. | Kemerovo group; | Chenuda, Wad Medani. | Quaranfil group; | Quaranfil. | Qalyub group; | Bandia. | Uukuniemi group; | Grand Arbaud, Ponteves. | Others; | Witwatersrand, Okola, Nkolbisson, Tataguine, Lembombo, Nyamanini, Thogoto, Jos, Tanga, Gossas, Le Dantec. |
| D 4600 gave positive results with the following viruses: Banzi, Bouboui, UGS. Cross CF and neutralization tests with these viruses gave the following results: | | | CF TEST | | NEUTRALIZATION TEST |
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| ANTIGENS | | VIRUS |
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Antisera | D 4600 | BANZI | BOUBOUI | UGS | Antisera | D 4600 | BANZI | BOUBOUI | UGS |
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| a Antiserum titer/antigen titer | b LNI in dex | D 4600 | 64/16 a | 32/32 | 8/4 | 8/16 | D 4600 | > 3.2 b | <0.9 | 2.3 | 1.7 | BANZI | 32/8 | 128/16 | | >64/16 | BANZI | 2.4 | 3.5 | | 3.0 | BOUBOUI | 8/16 | | 128/8 | | BOUBOUI | 1.9 | | 4.3 | | UGS | 8/16 | 32/16 | | 64/16 | UGS | 2.1 | 1.9 | | 2.9 |
| Results indicate that DakAnD 4600 is apparently a new Group B virus. | |
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