送交者: xj 于 2005-10-30, 10:46:17:
回答: which companies are doing better at developing the vaccine? 由 匆匆过客 于 2005-10-30, 10:33:39:
Every year they make new vaccines. and the profit for vaccine is very small. IT is the quantity that makes money.
That's why big companies are reluctant to do new vaccines. They have regualer vaccine to make which already stretches their capacity. It is unlikely the new vaccine will make more money than old ones. Besides, they probably have to donate the new vaccine to other countries.