Cooper, P.J., Chico, M., Sandoval, C., Espinel, I., Guevara, A., Levine, M.M., Griffin, G.E., Nutman, T.B. (2001)Human infection with Ascaris lumbricoides is associated with suppression of the interleukin-2 response to recombinant cholera toxin B subunit following vaccination with the live oral cholera vaccine CVD 103-HgR, Infect Immun. , 69(3), pp. 1574-80.