| No hemagglutinin has been prepared from MRM3630, but mouse antiserum to the virus (after 3 or 4 weekly intraperitoneal inoculations) did not inhibit hemagglutination by Group A (Sindbis, Getah, Ross River), Group B (Murray Valley encephalitis) or Koongol group (Koongol, Wongal) antigens. | Complement-fixation tests (using mouse serum collected after 4 weekly intraperitoneal inoculations) showed a relationship to Mapputta virus (MRM186) but not to the following viruses isolated in Australia - Sindbis, Getah, Ross River, Murray Valley encephalitis, Kunjin, Kokobera, Edge Hill, Stratford, Koongol, Wongal, Corriparta, Kowanyama and Eubenangee or to Japanese B encephalitis, dengue virus, types 1-4 and Bebaru. | Neutralization tests showed no relation to any of the viruses previously isolated in Australia. | | Virus or antigen | Serum |
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| MRM3630 | Mapputta (MRM186) |
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| CF | NT | CF | NT |
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| a Serum titre/antigen titre | b Log neutralization index of serum diluted 1:10, heated 56//30 min., and inoculated intraperitoneally into infant mice; expressed in dex. | MRM3630 | 256/1024 a | >4.0 b | <8/<8 | 0.3 | Mapputta (MRM186) | 32/256 | 0.1 | 128/1024 | >3.2 |
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