这个是最新官方说法。摘录如下:. }2 d$ s1 t/ G; X9 r- M4 u/ A
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Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: 9 ?8 y! B. J ^& N4 C5 N3 N
4 {1 @. B& N6 d2 r9 y4 g- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. . h- [5 q" D2 J# m . v1 b% v( v3 {5 T, m y- 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. 5 Q/ M" F! @6 c5 p
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- 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 : R7 t6 a3 z) L+ o$ a. t% I. ]$ j; R http://www.albertahealthservices.ca/901.asp#children + o+ S x7 H3 T1 B) R+ W2 [/ z4 r$ x8 m3 @+ P$ L: X" Y
Will children need one or two vaccines?' ^1 _' Y9 n: y- _# X' W
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The Public Health Agency of Canada (Nov 12, 2009) recommends: : K: ` P3 M: i( g% ^+ U) y- F1 A. M7 d
* 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." v/ b3 z/ F# q6 R
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.- N6 k# |! B- e
* 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." R6 Z1 F- O# G" P- J6 g
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.