For example, notes Hsu, when Taiwan experienced an outbreak of porcine foot and mouth disease, the Council of Agriculture made a major outlay of money to help fund numerous foot and mouth vaccine projects, some using E. coli to manufacture structural protein, some developing DNA vaccines, and some doing research with attenuated vaccines. But which is the most economically feasible?
徐堯煇以口蹄疫苗為例指出，台灣爆發豬口蹄疫時，農委會曾撥出鉅額經費，贊助各種發展口蹄疫苗的專案計畫，有的用大腸桿菌生產結構蛋白、有的發展 DNA 疫苗，也有減毒疫苗的研發… … 等等，但究竟哪一種最有經濟效益？