这个是最新官方说法。摘录如下: & _ }. t8 L% F- c& c' n8 Q2 q- v, L7 p: f
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: + P1 Z6 s# J. n s; K8 G0 s+ D
/ C7 ` t% C6 `' N) V/ 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. " W! E- |8 V1 T
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- 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. 6 L& \% |# h3 f2 S2 B $ @$ Y% k# w5 ]1 d9 d+ ^+ _- 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 : Q" P0 J2 q: I1 i0 n/ p" t; W http://www.albertahealthservices.ca/901.asp#children ! a2 L) i0 o* F 2 z( |, c" {; W+ e9 }0 m) e9 xWill children need one or two vaccines?/ T/ ~8 X: J3 u+ _5 _; C o
0 K/ e/ a% g9 K [The Public Health Agency of Canada (Nov 12, 2009) recommends: / q2 j+ f1 O( F% n2 b- @) y7 i7 F2 b; o
* 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. - P; }1 p- X* {6 @1 H * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. ! L$ O+ C, p3 K4 ~ * 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. ) i9 ~! O" y/ f4 \, E6 {+ s * All children aged 10 years and older should receive one full dose adjuvanted vaccine.