这个是最新官方说法。摘录如下: % s! f+ q7 B# e# J7 m; a: I( j" G6 _: L3 i! F
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: 1 L/ r( s0 ~+ N* [0 `# P! k4 V% a5 ^. s7 F! h
- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. 0 I5 `0 } D: g! m9 L$ \1 J' c0 E l: w
- 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. 7 z2 p" ? i8 K; b % Y6 Q: `% r, s# p- 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.
, q. t" a# W& g5 \' x6 G' ?Will children need one or two vaccines?) y; J/ n, O9 O2 a5 [
1 k# l6 s0 y( m- O
The Public Health Agency of Canada (Nov 12, 2009) recommends:* a4 n+ E" X! U. j* z
& j4 _* e3 A* g0 v/ U8 ] * 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.1 h1 h# f* Y. 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. % x( p, }5 ~$ O) D: Q. l * 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.$ R" R6 [5 q: ?$ u
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.