这个是最新官方说法。摘录如下: & n+ I' m/ Z" X/ e) M# E# i * k5 W. m6 E/ ?" XNot all children will get away with only one shot, however. The Public Health Agency's revised guidelines are as follows: $ c* j8 r9 Z: _
1 G) D& j* ?" M2 [& m" ?! X9 \- 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 L/ {& |% D5 T9 I x/ x0 T' s5 _( k' a; v- q5 Z7 r
- 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. / H/ _* E' B, M% _5 g6 P3 u, _ M0 h# E& j# P& v4 y: 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 G# ]7 `0 V! V8 RWill children need one or two vaccines?8 j* y M( N7 c
$ u" B0 H! Z9 C$ Z0 NThe Public Health Agency of Canada (Nov 12, 2009) recommends: " d3 @5 m- \' V% l 4 [6 H; e; ~8 D ?- K * 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. 7 i! A( X) ]3 ^8 ]3 r * Healthy children with no chronic health problems aged three years to under 10 years should receive one half dose of the H1N1 adjuvanted vaccine. , W' L" I: d5 g: o5 [4 L' D( ~) } * 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.( W8 ~. W4 x/ Z! I
* All children aged 10 years and older should receive one full dose adjuvanted vaccine.