这个是最新官方说法。摘录如下: ' q2 p. h2 W+ A 3 L: \: W" f2 M+ ZNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: - w- }/ N" D l8 a( m! ]0 f( @7 }5 S
- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. 1 M( _7 U* t# Q. X/ e, ?' f + K* N6 C- R3 N! O" n- 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 v$ n& f6 V/ z# l9 l6 M. X* ]0 {: F6 i) u
- 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 / Y0 Q9 [& D+ V7 nhttp://www.albertahealthservices.ca/901.asp#children 0 u) ]' k& X; h# T * P# z l m3 c" w+ O( ^Will children need one or two vaccines?: \$ `2 ~7 y: S c0 n. W# [
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The Public Health Agency of Canada (Nov 12, 2009) recommends: & O% H# p& s4 P! Z5 \5 @" G4 d2 I e& M: M# C, l/ B( E
* 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.$ R' D) j' Y$ o1 @% r0 u1 C
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. 7 Z! F* x3 X9 s3 _ * 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. 4 o) |# H8 X- q9 j- y$ K4 {! W * All children aged 10 years and older should receive one full dose adjuvanted vaccine.