Th17 responses in Echinostoma caproni infections in hosts of high and low compatibility

► The Th17 responses in the host of low compatibility with the parasite were high. ► The rejection of the worms seems to be mediated by a biased Th17/Th2 phenotype. ► The Th17 response generated in rats may facilitate the worm expulsion. ► The suppression of the Th1 responses seems essential for the worm expulsion.