这个是最新官方说法。摘录如下:9 V1 T' l3 v5 }/ m. U
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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: 4 d4 @5 f6 y0 {" n & t7 E9 H2 e4 W' k3 d* _3 o. o/ P- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. 7 a0 e- @( o2 g: U1 b; e6 Y7 N3 X! e d' F
- 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. 4 b3 v' Z/ o- M$ }7 Y
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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.
9 ]5 a2 S# _3 e5 K' n" SWill children need one or two vaccines?6 r, E+ l* U% O) N+ K) s- f
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The Public Health Agency of Canada (Nov 12, 2009) recommends:/ g9 Y6 d. l; x/ k- a
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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. / ]; T% x0 A" p; a' e * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.0 R9 h% z/ ~# z- D. z, y
* 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. + F" }# a5 u: v2 _7 U * All children aged 10 years and older should receive one full dose adjuvanted vaccine.