But because the effects of a hepatitis B infection are not as readily visible as symptoms of, say, polio, people remain relatively impassionate, even doubtful, about the threats that loom in the next 20 or 30 years.
但由於感染 B 肝病毒的後果不像小兒麻痺症狀立即可見，對於二、三十年後的威脅，人們的感受並不深刻，甚至半信半疑。