这个是最新官方说法。摘录如下: 7 I1 c; |' c S $ s2 F; {9 U3 rNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: * M I. X1 `3 A9 D1 d 2 A4 p! n2 ]4 ?- p# z: C0 R- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. % i! n# Y3 l& y4 Y( N8 n. x4 H3 B 3 n" A( K' g. Q3 S( c+ H- 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. ) {, R3 m) R# v5 A9 S/ e
, m# s l* I* ?8 Z2 h; g- 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 % e' S; P4 A0 p1 n http://www.albertahealthservices.ca/901.asp#children 4 y U. j2 ?* Z6 J h+ x* Z. X; T 1 D% n( V% a- X! e# [" d6 SWill children need one or two vaccines?, _! \) z/ I8 A+ X D; a
1 s3 G$ R9 t9 ?The Public Health Agency of Canada (Nov 12, 2009) recommends:9 F, k8 ]# Z& B. o. |
) a F; U9 E5 Q% m7 H h- Z
* 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. 2 h/ s% x; |! q+ ~ * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. ! R; m5 k% \ R * 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. - M/ o. ~' z; N8 z/ B; J * All children aged 10 years and older should receive one full dose adjuvanted vaccine.