这个是最新官方说法。摘录如下:/ Z3 E6 x+ N+ G* Z, _) Q' A
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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: 0 D& n P" N& g9 p
& s/ S! Z9 }1 ?( Q0 o: u- 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 X0 B# m$ P9 `1 ` H8 R
$ p' @6 J; s; G* E4 q8 a# ]# W- 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. $ ?% w |1 h7 x( V+ u7 {
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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.
* V4 `3 L) S# h) y. Q `# dThe Public Health Agency of Canada (Nov 12, 2009) recommends: / k5 W( M" F6 {3 i* `: |+ i4 h 4 p1 C% g# H6 h * 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.% ~1 z8 m6 L8 r+ f6 x
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. : M% }2 T5 x$ D9 \# j8 a2 n * 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. ; I4 p5 j7 ~' Z+ _; \. B v7 G * All children aged 10 years and older should receive one full dose adjuvanted vaccine.