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|  Neutralizing indices in suckling mice                                                       [1]                                             :   | 
|   | 
|       Immune serum       |       Virus strain       | 
|---|
 |   |       S 23       |       AK 9       |       Tribec       | 
|---|
 
  |  
  |  | *        LNI in dex.        |  |       Uukuniemi (S 23)       | 2.0  * |       0.1       |       0.0       |  |       Tick-borne encephalitis (TBE)       |       <0.6       |       1.9       |       ND       |  |       AK 9 (local strain of TBE)       |       0.4       |       >2.7       |       ND       |  |       Tribec       |       <0.9       |       ND       |       >1.8       |  |       Lymphocytic choriomeningitis       |       0.0       |       ND       |       ND       |  
  | 
|  In Yale Arbovirus Research Unit the Uukuniemi virus was found to be related to some recent isolates (mainly from ticks) which together form the Uukuniemi group.    | 
|  Results of complement-fixation tests (J. Casals):    | 
|   | 
|   |       Immune serum       | 
|---|
 |       Antigen       |       S 23       |       Potepli       |       GA       |       MWA       | 
|---|
 
  |  
  |  |        Serum titer/antigen titer; O = no fixation at dilutions 1:8.        |  |       Uukuniemi S 23       |       256/128       |       512/128       |       8/8       |       0       |  |       Uukuniemi, Potepli       |       128/256       |       512/256       |       8/8       |       0       |  |       Grand Arbaud       |       16/16       |       16/16+       |       256/256       |       Traces       |  |       Manawa       |       0       |       0       |       8/8       |       512/512       |  
  | 
|  Results of hemagglutination-inhibition test (J. Casals):    | 
|   | 
|   |       Antigen, 8 Units       | 
|---|
 |       Serum       |       UUK       |       GA       |       MWA       |       LJN       |       BHA       |       QRF       | 
|---|
 
  |  
  |  |        0 = <10        |  |       Uukuniemi       |       640       |       40       |       40       |       0       |       0       |       0       |  |       Grand Arbaud       |       160       |       160       |       40       |       0       |       0       |       0       |  |       Manawa       |       80       |       20       |       160       |       0       |       0       |       0       |  |       Lanjan       |       0       |       0       |       0       |       80       |       0       |       0       |  |       Bhanja       |       0       |       0       |       0       |       0       |       80       |       0       |  |       Silverwater       |       0       |       0       |       0       |       0       |       0       |       0       |  |       Quaranfil       |       0       |       0       |       0       |       0       |       0       |       80       |  |       Johnston Atoll       |       0       |       0       |       0       |       0       |       0       |       320       |  
  | 
|  (Ponteves and Zaliv Terpeniya are Uukuniemi group viruses listed in this catalogue not appearing in these tables.)   | 
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