这个是最新官方说法。摘录如下: : A' f+ U3 F/ v6 L' w0 d. b8 m$ {1 v8 _# P, z* v' L) o
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: % D: ^7 k1 ?/ q ) a- H0 u+ u. F+ ~- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. . P8 I6 l* Y3 \+ _5 H
- U* x g- t0 U. e5 k& g- 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. , A# h" e" N; M% T h# K
1 h& e7 D: Y+ B. ]7 b- 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 5 G# l% J+ I3 [7 O" P k4 A5 M http://www.albertahealthservices.ca/901.asp#children& p1 e" f$ f; J* ]
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Will children need one or two vaccines? ' M+ H0 M. g6 ~ ! d" Z0 _9 p4 t0 i: ]' Y$ OThe Public Health Agency of Canada (Nov 12, 2009) recommends: $ r6 K4 c+ }6 _ 2 U' P& k& Y* L1 u * 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. G2 |- r! ^' W7 [ 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. % E V0 F O" z, \, q; f7 B* Z * 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. 1 v) v# g0 T' G# h * All children aged 10 years and older should receive one full dose adjuvanted vaccine.