英國一間製藥廠，計劃生產10億劑從角鯊烯研發出來的武漢肺炎疫苗。角鯊烯是從鯊魚肝臟提取的油脂，若要替全球染疫患者接種這疫苗，估計至少要殺掉50萬條鯊魚。現時每年已有300萬條鯊魚因提取作藥物、化妝品、保健食品等而被宰殺，若需求再突然大量升幅，將會加重對鯊魚的威脅。從野生動物中提取資源並不是可持續的方法，應盡快找到角鯊烯的替代品。

A pharmaceutical company in UK intends to produce 1 billion doses of coronavirus vaccine with squalene, an oil harvested from shark livers. To produce enough vaccine for infected patients worldwide, at least five hundred thousand sharks will be killed. in average, around 3 million sharks are killed for squalene yearly to manufacture medicines, cosmetics, health products, etc.; a sudden increase in the demand of squalene would create more threats to the shark population. relying on a wild animal resources for a global need is not sustainable and there should be other alternatives. 

https://www.natureworldnews.com/articles/44559/20201012/conservationist-groups-shark-based-coronavirus-vaccine-will-kill-half-million.htm

https://udn.com/news/story/120944/4899376