5Vandelaer J, Birmingham M, Gasse F, et al. Tetanus in developing countries : an update on the maternal and neonatal tetanus elimination initiative [J].Vaccine,2003,21 (24): 3442-3445.
6Thwaites C L. Tetanus [J]. Current Anaesthesia & Critical Care,2005,16 (1) :50-57.
9PANG Y G, JIANG J Y, WANG L Z, et al. Effects of immunological stress on immune response in different breeds of piglets [J].Animal Husbandry and Feed Science, 2009,1(2):28-31.
