又到了1月份。新年伊始，寒风呼啸，呼吸道感染疾病频发。随着流感、新冠病毒、呼吸道合胞病毒（RSV）和胃肠道疾病诺如病毒这四种病毒在全美传播，你很难确定自己的病因到底是什么。再加上普通感冒，你会产生一系列类似的症状。

Michela Tindera Chloe wanders around outside the entrance. It’s loud and electronic music is thumping. And there, she meets a 26-year-old guy named Didi Steiner. He’s from Austria, and he catches her ...