乙型流感病毒核酸PCR检测试剂盒

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乙型流感病毒核酸PCR检测试剂盒

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乙型流感病毒核酸PCR检测试剂盒

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【公司名称】 广州健仑生物科技有限公司
【市场部】    杨永汉

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【公司地址】 广州清华科技园创新基地番禺石楼镇创启路63号二期2幢101-103室

根据病毒的核蛋白，流感可分为A、B、C、D 4个主要抗原型，或叫甲、乙、丙、丁型；其中A型和B型较常见，C型和D型不多见。B型主要有两种亚型： Victoria型和Yamagata型。从去年底到今年初增加的流感病例中，B型占了很大比例，其中Yamagata型明显增多。

解读：乙型流感病毒有所变异

季节性流感几乎每年都有，有时甚至一年不止暴发一次。虽然，它跟多数普通感冒一样都是由病毒感染引起的，但病毒经常有变异，有时会让人措手不及。

“流感至今仍是我们无法预测的威胁。”钟南山解释说，不像天花的毒株是固定的，流感的毒株老是在变，能不断逃避人群对它的免疫攻击。他引用国家流感中心数据指出，2017年4月以来，我国流行的A型（H3N2）,甲型H1N1，B型流感病毒均未发生明显变异，流行毒株与北半球推荐的2017~2018年疫苗株匹配性较好。目前我国使用的疫苗为三价流感疫苗，包含A（H1N1）pdm09,A（H3N2）和B型的（Victoria）这3种抗原组分。但从去年底到今年初，乙型流感病毒又有所变异，B型的Yamagata型明显增多，现有乙型疫苗的匹配性跟不上，未能对目前这波流感起到预防作用，人群对这一新病毒亚型缺乏免疫力，所以发病数翻倍。

According to the influenza virus nucleoprotein, can be divided into A, B, C, D 4 major anti prototype, or a, B, C, D; A and B are common, C type and D type rare. There are two main subtypes of B type: Victoria type and Yamagata type. Of the increased number of influenza cases from the end of last year to the beginning of this year, the B type accounted for a large proportion, of which the Yamagata type was significantly increased.

Interpretation: influenza B virus variation

Seasonal flu has almost every year, and sometimes even more than once a year. Although it is caused by most common cold, it is caused by virus infection, but the virus often has variation, sometimes it can make people unprepared.

"The flu is still a threat that we can't predict." Zhong explained that, unlike smallpox virus is fixed, flu strains are always changing, we can escape the attack on its immune population. He cited the data from the National Influenza Center, pointing out that since April 2017, there has been no significant variation in the prevalence of A (H3N2), type a H1N1 and B influenza viruses in China. The epidemic strains are well matched with the recommended 2017~2018 vaccine strains in the northern hemisphere. At present, the vaccine used in China is a trivalent influenza vaccine, which contains 3 kinds of antigen components, A (H1N1) pdm09, A (H3N2) and B type (Victoria). But from the end of last year to early this year, and the variation of influenza virus type Yamagata, type B increased significantly, the existing hepatitis vaccine, can not keep up, the current wave of flu failed to play a preventive role, people lack of immunity to this new virus subtype, so the incidence doubled.