这个是最新官方说法。摘录如下: : f9 Y) S1 k+ t" c. c: R2 c% `) }. t1 o5 z) X( D6 [$ X
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: ' |8 `3 m" X4 e! G9 W% r) ` w5 U# Q# ]' g$ g3 O8 v( Q- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. . a4 {, Y: q1 z. L. T
- K2 |4 L) J) U/ T
- 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. ! O+ D0 p* @3 B; k1 J
8 r C' I5 K: N# d2 q
- 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 , n3 K. z' {+ S p R* p: ^5 |http://www.albertahealthservices.ca/901.asp#children, J' U5 x2 z6 ~0 S4 g
% \6 T: K; k7 f5 m- T
Will children need one or two vaccines?: ^( D) J4 f- x) p: q& o
$ z; r2 [+ y3 ^# s. w3 B0 p
The Public Health Agency of Canada (Nov 12, 2009) recommends: ' n3 n% w" v7 _+ ^- w* o' }3 \: |" S$ [+ F; i2 K) v6 ~
* 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./ o1 i- _7 ]" q/ C9 K+ W
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine." K$ H. ~1 c4 |% _) o5 A- t
* 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.+ A9 v& M7 c# X T& V
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.