这个是最新官方说法。摘录如下: : w( ]9 {" X! l- U3 c$ Z1 z2 g: Q$ P* w5 n& e8 l4 T0 `
Not all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: ) t0 q+ h. E [; o2 d
* {1 k' C1 |1 q: C" m u- E- Children between six months and under three years old should still receive two half-doses of adjuvanted H1N1 vaccine, at least 21 days apart. 3 D& { }1 |9 x. X5 ~" E' T6 R# Z; e) W. E" O
- 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. & W n. T+ n! n, W) S3 _9 f- i0 N$ U( 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.
1 b7 @8 t2 d7 rWill children need one or two vaccines? ; Q) b V7 I" J* _- s6 T( Q# Q ! w) t) G4 O' w2 wThe Public Health Agency of Canada (Nov 12, 2009) recommends:' N: l8 c! M' L0 w$ N" V
' u1 F) d- |, M+ X H: M * 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.+ g9 ]* s" n. s$ J5 ]
* Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine.8 t( ]% i) F! I) e
* 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.) H& z2 B# u6 [3 T7 x+ q
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.