几乎所有的传统流感疫苗都是通过在鸡胚中增殖病毒而获得德，这是一个缓慢的过程，某些毒株甚至更慢——包括2009年的H1N 1流感病毒。
Nearly all conventional flu vaccines are made by growing the virus in chicken eggs, a slow process that is even slower with some strains - including 2009 H1N1 flu.
1998年，科研人员安德鲁·维克费尔德在一篇论文中提出疫苗和儿童自闭症之间存在关联。这篇报告引发的疫苗恐惧一直持续到今天。
A 1998 paper by scientist Andrew Wakefield reported a connection between vaccinations and autism in children. The report set off a vaccination scare that lasts to this day.
正如韦克非尔德医生所建议的那样，可以支付相应费用的英国父母频繁地光顾名医汇聚的哈利街，让自己的孩子分三次接种疫苗。
British parents who could afford it frequented plush Harley Street clinics to have their toddlers immunised with three separate jabs, as Dr Wakefield had recommended.
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