这个是最新官方说法。摘录如下: ; ^0 M& ~+ m+ I L) I. j2 C 2 b5 K3 f6 t) x$ U/ O: sNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: 9 u& o! q+ y8 n# k, a 4 w- n& ]1 D' j! A- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. # B- z' f" f2 i ' b3 Q( _8 j7 P! x" {7 i5 S- Children between three years and nine years old with chronic health conditions should get their first half-dose as quickly as possible. They should get a second half-dose at least 21 days later. 8 m! E0 p0 X- f$ ^- O" I0 ^. v2 W4 ?2 p$ p, D% a
- Healthy kids between three years and nine years old should only receive a half-dose of H1N1 vaccine. They don't need to come back for a second shot.
alberta health 的说法 $ {- o$ S9 e) a0 l http://www.albertahealthservices.ca/901.asp#children 8 U/ n3 A7 E% P* M4 } e+ ^ G6 B5 p/ T$ @# G/ k7 U
Will children need one or two vaccines? ; {; S9 s' p8 g8 t$ z 3 _2 P: k. @5 }9 H" u' q# nThe Public Health Agency of Canada (Nov 12, 2009) recommends:+ j1 w, {! t6 \: O! W
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* Children from six months up to and less than three years old receive two half-doses of the H1N1 adjuvanted vaccine. There should be a minimum of 21 days between the two half doses.! q* p( u) p' Y, U5 [ b2 I4 Z
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.! Z% y9 Q% ^; h( e: c$ _. S& j
* Children aged three to under 10 years with chronic medical conditions should receive two half doses of adjuvanted H1N1 vaccine. There should be a minimum of 21 days between the two half doses.' [% a. R5 b1 c" X# q$ ^
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.