A child receives a vaccine at a disease prevention and control center

A Chinese expert has urged the public to get a flu shot before October, warning of the possibility that COVID-19 may collide with the seasonal flu.
 

If a patient is infected by both the flu and COVID-19, it will complicate diagnosis, increase the difficulty of isolation, and require more resources, the mortality rate may also rise notably. Timely and large-scale flu vaccination is the most effective way to prevent coinfection.
 

The best time to get a flu shot is before the end of next month and no later than October. The peak flu season is in December and January. It takes up to four weeks for humans to develop antibodies after flu vaccination.
 

新冠疫情下的流感疫苗：专家吁尽快接种，降低合并感染风险

8月以来，国内已有多名医学专家公开表示担忧：秋冬季节来临时，新冠肺炎疫情或与季节性流感等呼吸道传染病伴随出现、交互影响，从而增加鉴别诊断难度和疫情复杂性。
 

不过，由于流感疫苗制备过程长、成本高，企业每年的疫苗生产计划通常在上一年已基本敲定，导致临时扩产具有较大难度。有流感疫苗生产企业的相关工作人员表示，去年尚未考虑到新冠肺炎疫情，因此今年疫苗供应或有供不应求的可能。
 

在我国，流感疫苗属于公众自愿选择、自费承担的二类疫苗，一般每年自9-10月起开始接种。今年国家流感疫苗的批签发时间比2019年提早了近一个月，截至8月16日，今年各类流感疫苗批签发总量超过654万剂，约为去年同期的2.4倍，山东、四川等多地接种点已陆续开放接种。
 

值得注意的是，根据世卫组织今年的监测，北半球四大最流行的流感病毒毒株中已有三个发生变化，这意味着流感防控形势本身便不容小觑。
 

中国工程院院士、呼吸病学与危重症医学专家王辰等人均建议，最有效的预防办法是及时普遍接种流感疫苗，并较充分地扩大接种人群。
 

8月18日，世界卫生组织亦曾强调，在今年新冠肺炎疫情之下，防控流感及相关并发症比以往更为重要。多国政府都希望尽量减少流感患者人数，以腾出更多医疗资源，应对有可能出现的COVID-19第二波疫情。

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