这个是最新官方说法。摘录如下: ( T3 ~ W# v$ ]2 k2 ^9 w% q1 C/ {( D& p( f2 K
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: / w i& w$ p3 w, v7 W5 J% S
4 G' X) P# r5 P7 g0 H- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. ) ~! j3 O7 k5 h3 u) P: A& a 9 X8 m' b: W7 \8 p" C* q n0 Q- 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 Q3 a' _: e. l ; | M2 j! n( q" A# P# t- 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 % s. U: d- a( g, T9 d http://www.albertahealthservices.ca/901.asp#children 8 D- z& g! o* l# P% a# U4 w - v5 [; L# r6 sWill children need one or two vaccines?, A+ A$ ^3 _# P; c
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The Public Health Agency of Canada (Nov 12, 2009) recommends: " c; T% M7 X% O& O& t7 R" Z9 [6 F- {) X- Z6 m3 T
* 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.! N1 F6 C' D6 ~
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. / q' E1 a0 M6 g% u * 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.0 L6 @8 g0 ?$ }
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.