这个是最新官方说法。摘录如下: O, F1 K) f: G% S+ X/ d' D* S h- s0 I; h, pNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: % t5 j U1 t& X. a/ A . u e- |: f2 J u- y# 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. & _# ]* S9 y+ l f/ {9 h; W5 g7 \9 Z1 K2 w) J
- 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. 0 r& g* X1 ?2 o* R 7 ?5 k+ s; {/ _% D/ V' y- 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.
0 q F' u3 }: N* I: f l& U UThe Public Health Agency of Canada (Nov 12, 2009) recommends:% R0 K* W S0 g5 D
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* 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 C. V* a* H" T7 n * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.& u1 }' [5 x9 f! 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./ U# o+ n' C# n+ m
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.