|   | 
|  Related by CF to Irituia virus (BeAn 28873) of the Changuinola group as follows                                                      [2]                                             :   | 
|   | 
|       Antigen       |       Serum or Ascitic Fluid       | 
|---|
 |   | Irituia                                                        [3i]                                              | Gurupi                                                        [6i]                                              | Ourem                                                       [4i]                                              | Caninde                                                        [5i]                                              |       Control       | 
|---|
 
  |  
  |  | a        Antibody titer/antigen titer; 0 = <4        |  |       Irituia       | 16/64  a |       32/64       |       64/16       |       128/64       |       0       |  |       Gurupi       |       32/64       |       32/64       |       64/16       |       128/64       |       0       |  |       Ourem       |       8/16       |       32/16       |       >256/64       |       64/64       |       0       |  |       Caninde       |       32/64       |       64/64       |       64/16       |       128/64       |       0       |  |       Control       |       0       |       0       |       0       |       0       |       0       |  
  | 
|  Results of plaque-reduction cross-neutralization tests with Changuinola group viruses performed at YARU were as follows                                                       [3]                                             :   | 
|   | 
|       Virus       |       Serum       | 
|---|
 |   |       CGL       |       GUR       |       Bt766       |       Bt2365       |       Bt104       |       OUR       |       Bt2164       |       CoAr2837       |       IRI       | 
|---|
 
  |  
  |  |        0 = <2        |  |       CGL       |       >256       |       0       |       >256       |       0       |       0       |       0       |       0       |       0       |       0       |  |       Gurupi       |       0       |       >256       |       0       |       4       |       0       |       8       |       0       |       0       |       0       |  |       Bt 766       |       >256       |       0       |       256       |       4       |       4       |       0       |       0       |       0       |       0       |  |       Bt 2365       |       0       |       0       |       0       |       64       |       0       |       0       |       128       |       2       |       0       |  |       Bt 104       |       0       |       0       |       0       |       0       |       32       |       0       |       0       |       0       |       0       |  |       Ourem       |       0       |       0       |       0       |       0       |       0       |       >256       |       0       |       0       |       0       |  |       Bt 2164       |       0       |       0       |       0       |       32       |       0       |       0       |       32       |       2       |       0       |  |       CoAr 2837       |       0       |       2       |       0       |       2       |       0       |       0       |       0       |       >256       |       0       |  |       Irituia       |       0       |       0       |       0       |       0       |       0       |       0       |       0       |       0       |       256       |  
  | 
|  CGL = Changuinola; GUR = Gurupi; OUR = Ourem; IRI = Irituia   | 
|  Results of neutralization tests performed in infant mice (ic route) at the Evandro Chagas Institute were as follows:    | 
|   | 
|       Virus       |       Ascitic Fluid or Serum       | 
|---|
 |   | IRI                                                        [5i]                                              b | GUR                                                        [5i]                                              b | OUR                                                        [4i]                                              b | CAN                                                        [5i]                                              c | JAM                                                        [5i]                                              c | ALT                                                        [4i]                                              c | 
|---|
 
  |  
  |  | b        Ascitic fluid        |  | c        Serum        |  | d        LNI in dex        |  |       Irituia       | 3.0  d |   |   |   |       <1.0       |       0.8       |  |       Gurupi       |   |       2.5       |   |   |       <0.3       |       <0.3       |  |       Ourem       |   |   |       3.9       |   |       <1.0       |       <0.9       |  |       Ar 54342       |   |   |   |       3.0       |       0.8       |       0.4       |  |       Jamanxi       |       0.2       |       0.3       |       0       |       0.5       |       3.0       |       0       |  |       Altamira       |       1.1       |       1.2       |       1.0       |       1.0       |       0.9       |       >3.1       |  
  | 
|  CAN = Caninde; JAM = Jamanxi; ALT = Altamira   | 
|   |