-
23
Country
Year Age Group
Percent
of
Covered
Survey
Table 4
Vitamin A Deficiency in Selected Countries
of the Asia and Pacific Region
(1)
Notes: Criteria used for4) Prevalence definition of deficiency
of Vit. A Def.
Bangladesh
81/82
4 yrs
China
82
All ages
18.0
0.9,2
Conjunctival xerosis
Keratomalacia
(一)
Indonesia
83/85
Preschoolers
1.1
Nepal
80/81
All ages
0.6
Philippines
84
2-6 yrs
1.5
Sri Lanka
80/82
Preschoolers
1.7.3
(~)
Viet Nam
84/88
All ages
0.8
Xerophthalmia (signs not
specified)
Corneal xerosis + Bitot's spots 2 clinical signs (not specified) Bitot's spots
Xerophthalmia (signs not
specified)
Source: FAO Nutrition Country Profiles.
(4)
Countries where adequate national-level data exist.
3% prevalence recorded in Central Java.
1.6% prevalence recorded in the southern coastal region.
WHO has established prevalence criteria for determining the public health significance of vitamin A deficiency among preschoolers, based
on the
progressive clinical symptoms (eye lesions) associated with xerophthalmia: Night blindness in >1%
Bitot's spots, conjunctival xerosis in >0.5%
Corneal xerosis, keratomalacia in >0.01%.
TABLE 5
Incidence of Goitre/Cretinism and At Risk Population in Selected
Countries of the Region
Country
Percentage of Population
At Risk
Endemic Goitre
Cretinism
Bangladesh
Bhutan
28.1
10.5
0.36
100.0
65.4
5.58
China
33.0
1.4
n.a.
India
20.0
7.3
0.30
Indonesia
18.5
6.1
0.27
Kampuchea
30.0
10.3
n.a.
Laos
29.0
10.5
n.a.
Myanmar
36.5
17.3
0.76
Nepal
92.0
46.1
3.21
Sri Lanka
65.6
19.3
0.49
Thailand
38.8
14.7
0.76
Viet Nam
12.3
2.5
n.a.
Source: FAO Nutrition Country Profiles
n.a.: not available.
No comments yet.
Private notes are available after approval.