@article{milhomem_suassuna_1987,  title={Investigation of the response to the enterobacterial common antigen after typhoid vaccination},  volume={20},  ISSN={0037-8682},  url={https://doi.org/10.1590/S0037-86821987000100002},  DOI={10.1590/S0037-86821987000100002},  number={1},  journal={Revista da Sociedade Brasileira de Medicina Tropical},  publisher={Sociedade Brasileira de Medicina Tropical - SBMT},  author={Milhomem, Arlete M. and Suassuna, ítalo},  year={1987},  month={Jan},  pages={7–12} }