这个是最新官方说法。摘录如下: $ v4 c i1 u3 j7 M: ?5 @8 e. @ $ c3 A$ `/ I8 Z" jNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: & ?4 C# l* r3 k$ o r+ O3 n Z3 D! w% a( u/ t4 F" k- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. 4 R4 d& g% z* _2 ]* ~! k5 ]; i! a- T e4 Q6 y( j- h
- 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. $ T" S6 }5 w2 g2 |* s$ ?/ }) V. v4 c: L: R$ U& C& j
- 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 # n4 _& {, r9 z- L http://www.albertahealthservices.ca/901.asp#children , k( s L! v* o, A( l+ c% r' L6 l
Will children need one or two vaccines? : q1 h$ A, W' D( s3 O7 P5 d& f% t4 y8 r( P5 h- _1 p0 l2 Y( D
The Public Health Agency of Canada (Nov 12, 2009) recommends:/ L- n3 p2 q6 C k! Q+ x
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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. 5 R7 g) [1 d9 q- e: a- k7 ~% V * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine." d% R6 [+ H( _
* 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.5 C1 B; I3 T4 W1 f- i ]" n
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.