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总结
美国宾夕法尼亚、新泽西和特拉华等州近期流感活动明显升高。多家媒体援引疾控监测称，流感样病例就诊比例在全美处于高位，部分地区接近或达到历史纪录；同时出现的新变异株可能延长本季流感传播周期。卫生部门提醒公众关注症状变化，在老年人、慢病患者等高风险人群中尽快接种疫苗并加强个人防护，以降低住院负担及校园、职场传播压力。
正文
Flu activity spikes in Pennsylvania, New Jersey and Delaware as new variant threatens a longer season WHYY Flu cases surge across US. See where cases are rising. USA Today Wondering if you should get a flu shot? Here's what science says CNN Flu-like illness activity now at highest rate on record, new CDC data shows abcnews.go.com Ohio's bad flu season to get worse as 'super flu' spreads, state warns The Columbus Dispatch
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