| ISS.Phl.18 antigen and MIAF did not react in CF test with antigens and MIAF prepared against Toscana , SFN, and SFS viruses. | At YARU [2] ; ISS.Phl.18 was screened by indirect fluorescent antibody test against the following MIAF: Phlebotomus fever group, Toscana , SFN, Arumowot, Gordil, Saint Floris, SFS, Rift Valley Fever , Karimabad, Salehabad, Gabek Forest, VSV group, Isfahan , Chandipura , and Jug Bogdanovac. Positive reactions were obtained with Toscana , SFN, Gordil, Saint Floris, Salehabad, Gabek Forest, and the Phlebotomus fever group MIAF. ISS.Phl.18 antigen and MIAF were then tested by CF against Salehabad, Gabek Forest, Gordil, Toscana , SFN, Saint Floris antigens, and MIAF. Positive reactions were obtained between ISS.Phl.18, Salehabad, and Gabek Forest. | | ANTIGEN | MIAF |
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| ISS.Phl.18 | Salehabad | Gabek Forest |
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| a Serum titer/antigen titer. | ISS.Phl.18 | 256/> 256 a | 128/>64 | <4/<4 | Salehabad | 64/>128 | 256/> 128 | <4/<4 | Gabek Forest | 16/4 | <4/<4 | >256/> 128 |
| Cross NT tests (plaque reduction method) between ISS.Phl.18 and Salehabad viruses and MIAF gave the following results: | | VIRUS | MIAF |
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| ISS.Phl.18 | Salehabad |
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| b Dilution producing >90% plaque reduction. | ISS.Phl.18 | 160 b | <10 | Salehabad | <10 | 320 |
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