front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |24 |25 |26 |27 |28 | 29 |30 |31 |32 |33 |34 |35 |36 |37 |38 |39|40 |review

However, although dengue 2 viruses appear to possess an epitope that reacts with dengue 1 antibodies, infection of humans with the American genotype dengue 2 virus did not raise antibodies against dengue 1. (shown here with American and Asian isolates)