Or a universal vaccine to be effective, however, Fiers pointed out that it must be administered nasally because nose drops, unlike flu shots, don't require medical expertise to be administered.

指出，在使通用疫苗发挥效力的同时，我们针对滴鼻剂要在操作时保护鼻子，而不像注射流感疫苗不需要医学专业技能。

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Hepatitis C has been described as an "approaching epidemic" - and unlike hepatitis A and B, there is no vaccine against it.

BBC: Liver drug delay condemned