| | | CF tests. Homologous titer = 32/8. | | D 5443 failed to react with the following viruses: | | |
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| | Group A; | chikungunya, o'nyong-nyong, Semliki Forest virus, Sindbis, Middelburg, Ndumu. | | Group B; | Ntaya, Wesselsbron, Dakar bat, Uganda S, yellow fever, Zika, Spondweni, Bukalasa bat, Bagaza (DakArB 209), DakArY 310, Entebbe bat, Banzi, Bouboui, 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 5443 gave positive results with the following viruses: West Nile, Usutu, Y 276 (S-t Usutu). Cross-CF and neutralization tests with these viruses gave the following results: | | | | | ANTIGENS | | VIRUS |
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| Antisera | D 5443 | WN | USU | Y 276 | Antisera | D 5443 | WN | USU | Y 276 |
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| | a Antibody titer/antigen titer | | b LNI in dex | | D 5443 | 16/64 a | 0/0 | 0/0 | 0/0 | D 5443 | 1.8 b | <0.7 | 1.3 | 0.9 | | WN | 8/32 | 16/32 | | | WN | 1.7 | 1.3 | 3.5 | 2.0 | | USU | 8/8 | | 32/16 | 8/16 | USU | <0.8 | <0.3 | 2.3 | 1.0 | | Y 276 | 32/32 | 64/32 | 32/32 | 128/32 | Y 276 | <1.0 | 1.2 | 2.2 | 2.7 |
| | Results indicate that DakAn D 5443 is apparently a hitherto undescribed virus strain related to West Nile. | | |
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