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关注健康科学预防乙肝知识PPT课件

  • 2026-07-27 19:15:03
关注健康科学预防乙肝知识PPT课件

病毒性肝炎的类型与特点

  目前明确的病毒性肝炎已超过七种,最为常见的依次是乙型、甲型、丙型、戊型、丁型肝炎,还有庚型和己型肝炎为新近发现的较为罕见的病毒性肝炎,肝炎种类不同,其临床特点、预后和防治措施也就各不相同,必须区别对待。

病毒性肝炎基本可分为两类

第一种:预后良好的、来得快去得也快的急性肝炎,主要包括甲型和戊型两种肝炎,主要经消化道传播。

第二种:预后较差,容易形成迁延不愈的慢性肝炎,主要包括乙型、丙型和丁型肝炎。主要经血液传播,急性病例中大部分可以获得痊愈,另一部分转为慢性,一旦慢性化,很难彻底治愈。

我国乙肝发病率

病毒性肝炎在我国各类传染病中发病率最高

我国曾受乙型肝炎病毒感染的人群约 7 亿

感染后未能痊愈者约1.2亿——10%

乙型肝炎患者近3千万

每年近 30万 人死于肝炎或肝癌

乙肝的传播途径

垂直传播丨包括母婴传播和父婴传播

母婴传播约占50%以上,其中宫内感染约占4.54%,其余为分娩时的感染;

父婴传播的发生率不清,但比例不高,可能与精细胞含HBV有关,也可能与出生后的密切接触有关。

血液传播丨血液传播的条件:病毒的数量、接触的程度

通常理解的血液传播途径:输血、共用针筒

易被忽略的血液传播的途径:共用剃须刀,共用牙刷,共用毛巾,纹身、纹眉、穿耳、洞鼻、环耳廓等,因刀具不洁造成传播。 

夫妻一方HBsAg阳性时,经过平均27个月,其HBV指标的阳转率高达53%。但HBsAg的阳性率仅14%,提示夫妻间HBV传播率虽高,但转慢率不高,多数自然痊愈。

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  1. CONNECT:[ UseTime:0.001114s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001789s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000698s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000668s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001492s ]
  6. SELECT * FROM `set` [ RunTime:0.000547s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001711s ]
  8. SELECT * FROM `article` WHERE `id` = 517223 LIMIT 1 [ RunTime:0.001016s ]
  9. UPDATE `article` SET `lasttime` = 1785516139 WHERE `id` = 517223 [ RunTime:0.039746s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000778s ]
  11. SELECT * FROM `article` WHERE `id` < 517223 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001444s ]
  12. SELECT * FROM `article` WHERE `id` > 517223 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001275s ]
  13. SELECT * FROM `article` WHERE `id` < 517223 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001891s ]
  14. SELECT * FROM `article` WHERE `id` < 517223 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.024868s ]
  15. SELECT * FROM `article` WHERE `id` < 517223 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001552s ]
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