这个是最新官方说法。摘录如下: ! ^# y o- `+ h M P. t $ l3 P2 [' V# ~* y5 oNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: ; c% D# t5 g1 T" \# \- w' R* t' A1 L& c
- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. # k0 P# ~, U, F% t& x. x( C% _7 Z" h5 b' j3 m
- 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. - y9 ~7 X1 K# U0 [+ P6 k& ?
1 q2 W0 I9 X% e7 h( ]8 N- 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- j9 Y/ A1 {8 I' z3 m( ?/ XWill children need one or two vaccines? 8 |' @! F/ S9 _2 M: m: s ' `. l. C# S. gThe Public Health Agency of Canada (Nov 12, 2009) recommends: 0 ?3 T; p. \9 f/ ]7 Z ; E. ]) p) X, I6 @7 v- P; e( X * 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 T; z9 C: g3 t+ l" c
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.$ F6 {) J" R) V- ~' z P' N' y$ c+ Y6 ^
* 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. ! C( n# p8 `! O j/ E- g * All children aged 10 years and older should receive one full dose adjuvanted vaccine.