这个是最新官方说法。摘录如下: % k7 e u& s$ b% L! K6 {' g8 D4 X" j- o2 L* |* w; R
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: 6 ?- m$ H5 J' [9 E9 ^, v0 |) E9 r( 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. 7 l4 m! g. J. P4 D% t
" d/ p1 P% d, y+ J2 k2 W) m1 u- 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. 1 T B0 n3 d0 ?. i 4 J+ G( k4 }( P1 q$ t- 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 9 n8 w6 O% c& F R: ]4 A http://www.albertahealthservices.ca/901.asp#children 4 y+ o0 ?1 z! B3 s* h- z3 D- _7 S+ ]# Y3 x. [. {
Will children need one or two vaccines?$ Z c, M# Y" L6 w. m) A& C; W4 v
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The Public Health Agency of Canada (Nov 12, 2009) recommends: 3 U+ i* \. z. G* O+ p/ G1 Z7 B2 l1 L
* 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.6 X$ U/ ?; w) }9 b+ L5 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.. f( }) H& ^1 |, o3 A
* 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. 9 h7 V$ H# O9 K& O9 F9 V * All children aged 10 years and older should receive one full dose adjuvanted vaccine.