$挪威邮轮(NCLH)$ 一个是去年的一个是今年七月的数据，但仍然有代表性, 如果这次有效的疫苗出来了，你和家人会接种吗？
45 Percent of Surveyed American Adults Doubt Vaccine Safety June 24, 2019
A recent online survey of more than 2,000 U.S. adults, conducted by The Harris Poll on behalf of the American Osteopathic Association, revealed that more than 2 in 5 American adults (45 percent) say something has caused them to doubt vaccine safety.