 鲜花( 1181)  鸡蛋( 48)
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谢谢老师提供第一手资料,事实胜于熊辫。$ t- @% L* R6 y2 I( Z
架鸡棚 发表于 2011-8-8 14:42 
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I agree.2 t- N/ J! c1 ] O
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http://www.emedicinehealth.com/hepatitis_b/page2_em.htm#Hepatitis B Causes0 u0 N2 D5 j' q1 b; k' G4 C
0 z/ }$ F0 R+ W: h( A+ ~Hepatitis B Transmission and Causes
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% R( @! |; {- {) FThe hepatitis B virus is known as a blood-borne virus because it is transmitted from one person to another via blood or fluids contaminated with blood. Another important route of transmission is from an infected mother to a newborn child, which occurs during or shortly after birth.( c& } n& ?$ j' y; ?- h* o
" |- E: e0 z ?) B7 WDirect contract with blood may occur through the use of dirty needles during illicit drug use, inadvertent needle sticks experienced by healthcare workers, or contact with blood through other means. Semen, which contain small amounts of blood, and saliva that is contaminated with blood also carry the virus.
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The virus may be transmitted when these fluids come in contact with broken skin or a mucous membrane (in the mouth, genital organs, or rectum) of an uninfected person.
" d: X% ~! V- n2 T0 ^7 H MPeople who are at an increased risk of being infected with the hepatitis B virus include the following:
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! \8 ^9 d3 k1 z; D5 r; @# SMen or women who have multiple sex partners, especially if they don't use a condom" w2 F+ `. L( g' D( M% g j
/ w9 Q9 C! c. A% u! X& f8 |# GMen who have sex with men
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+ B3 v) F( J- L8 Y$ i& wMen or women who have sex with a person infected with hepatitis B virus
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+ u, J% J5 _* Q3 X! ePeople with other sexually transmitted diseases / B0 W' j% T* T
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People who inject drugs with shared needles . F* |* V3 u$ v8 j
2 [7 o; g$ H4 ZPeople who receive transfusions of blood or blood products 5 h% E: f" q; t4 r9 I3 v. r
( [% ^4 L6 x( m* r: k7 k! D* uPeople who undergo dialysis for kidney disease # x' e: ^5 \+ |( W: d( Z
6 ^0 `5 H8 N5 f$ g, JInstitutionalized mentally handicapped people and their attendants, caregivers, and family members
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Health care workers who are stuck with needles or other sharp instruments contaminated with infected blood
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8 x. t$ \% I. |% h; hInfants born to infected mothers% E9 ?! T8 G- a ^! c
In some cases, the source of transmission is never known.2 w' I% ^" p% Z! @- s4 l: v3 }
' f8 Y2 Y8 _0 q3 _+ p% uYou cannot get hepatitis B from the following activities:
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/ |- v/ z) r& w3 i" YHaving someone sneeze or cough on you : @$ ~, u# q/ P# ~8 `
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Hugging someone! @: x" G: J4 S) x% B- C
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Handshaking a persons hand
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Breastfeeding your child" k4 ]+ J) [" M6 G! L: ^- a
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Eating food or drinking water 2 Q) |# j8 R& w) W' f1 o
4 t" l" A. M; Z; D9 t& c! q/ a$ TCasual contact (such as an office or social setting) |
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