TCN2 and infection: Also, single infection presented a similar profile both in early and late stages with mice serum samples infected with TcI/COL showing high reactivity with “TI” antigen and low reactivity with “AII’ antigen and mice serum samples infected with TcII/Y presenting high reactivity with “AII” antigen and low reactivity with “TI” and “EVI” antigens (Figs 5 and 7).