这个是最新官方说法。摘录如下: & g7 w, B# V% J+ F+ ?7 p2 O! u# V G/ Z) z" x
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: m" r% o) L# c' [
- R' o0 c% r8 ?2 O* V: F0 E- 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 f1 `0 \/ O. p0 p5 z5 b# O4 A$ }& [% o
- 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. " e# V) [$ R1 ?+ W9 b$ \( i! z) s( Q' g- h
- 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.
/ V' p/ n% m( w" r4 VThe Public Health Agency of Canada (Nov 12, 2009) recommends:( Q1 `- D( f5 I2 h( M% `
/ n6 A" T+ L& w- K% t * 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. * F+ S8 _8 q3 ?% U) T$ j, F& q6 I9 Z * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine./ O6 A& |" U( C5 d: Q e% y
* 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.+ W& L) ~1 c. g
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.