10

2

0.85

1

12

10

2

0.75

(against strains in vaccine)

Approx. 3

5–10

10

2

0.80

(against strains in vaccine)

1–2

1–2

3

5

0.90

2 (with DTP)

5–10

4

5

(as part of combination)

0.90

1

15

5

5

0.90

3

20

1

2

(dependent on price)

0.90

3

30

6–8

2–3

0.80

2

(boosters required with all current; none gives life-long immunity)

10–20

10

5

0.75

1

25

4–6

5

(in moderate to high risk areas)

0.80

2

10

5

5

0.80

(against severe disease in young children)

2+boosters

15

5–8

2

0.80

(assuming immunity is long-lasting)

3

10–15

8–10

2

0.80

(assuming immunity is long-lasting)

3

10–15