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TABLE 4.5 Example of an Individual Scheme of Infant Mortality Equivalence Values

 

Infant Mortality Equivalence Values

Morbidity Category

Description

Unit

Under 5 Years

5–14 Years

15–59 Years

60 Years and Over

A

Moderate localized pain and/or mild systemic reaction, or impairment requiring minor change in normal activities, and associated with some restriction of work activity

Days

20,000

7,500

3,000

15,000

B

Moderate pain and/or moderate impairment requiring moderate change in normal activities, e.g., housebound or in bed, and associated with temporary loss of ability to work

Days

10,000

5,000

1,500

1,500

C

Severe pain, severe short-term impairment, or hospitalization

Days

1,000

250

60

300

D

Mild chronic disability (not requiring hospitalization, institutionalization, or other major limitation of normal activity, and resulting in minor limitation of ability to work)

Cases

100

50

60

600

E

Moderate to severe chronic disability (requiring hospitalization, special care, or other major limitation of normal activity, and seriously restricting ability to work)

Cases

5

2.5

3

6

F

Total impairment

Cases

1

0.5

0.3

6

G

Reproductive impairment resulting in infertility

Cases

5

2.5

0.6

300

H

Death

Cases

1

0.5

0.3

3

Procedures Used in Deriving Disease Estimates

The committee solicited information that would enable estimates to be made in the format shown in Table 4.3 from individuals knowledgeable about particular diseases. If the disease was not one for which the World Health Organization collects information, the committee used other sources. Committee staff integrated information from various sources with the assistance of consultants. Reviews of preliminary estimates were obtained from initial sources and other individuals. Revised estimates were generated on the basis of reviews, with committee members arbitrating if reviewers made conflicting recommendations for modification of preliminary efforts.

Estimates of disease burden for the diseases that are candidates for accelerated vaccine development are included in Appendixes D-1 through D-19. For some of the diseases included in this comparison, only limited data exist on their incidence in developing countries. Estimates sometimes had to be made on the basis of reports from a few



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