Perhaps the deletion of CHPNeu and glgX affected other genes involved in virulence, such as the nanH and malS. The invasion levels of nanH and malS mutants were not significantly different (p > 0.05) compared to those found for ΔinvA; hence, nanH and malS may represent new virulence genes in Salmonella infections. The gene discussed is NEU1; the disease is Salmonella Infections.