这个是最新官方说法。摘录如下: 8 N0 b8 S) b0 M; E # x) c( g" [! ^: n CNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: E4 R+ ?6 Z5 Y# [
+ B) i8 _! l) h, O: V5 t% H) r( l- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. * {! r3 e3 x7 P4 X; ]7 `5 o9 y, ~
: D; a) q1 i8 H- X0 z5 v- 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. 5 c$ m. E4 S) g5 N4 X \" N; r) N
- M' q; l5 p) @0 y# k- 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.
# }" d4 J# I- ~The Public Health Agency of Canada (Nov 12, 2009) recommends: 6 W) F6 W9 a$ c5 W! g ^ ' U. Z" |' ]3 z) t/ `/ e, M * 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.$ \( ]4 n, c6 z' n, W+ N/ p
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. ! `3 F. U% ^$ |: u# {. k) r6 ~ * 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. 5 Y/ a3 |) {8 t/ v: h- G * All children aged 10 years and older should receive one full dose adjuvanted vaccine.