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India

00000000Although the first recorded outbreak of dengue fever in India was in 1812, serological surveys were first carried out in 1954, and the latter indicated that DEN-1 and DEN-2 were widespread(14). In 1960, DEN-4 was isolated in Vellore, in the South, without any association with haemorrhagic diathesis(15). The types of dengue virus isolated from patients in the Vellore area between 1956 and 1968 are depicted in Table 4.

Table 4. Dengue virus isolation from patients in Vellore, 1956 to 1968

Year
DEN-1
DEN-2
DEN-3
DEN-4
Total
1956
-
1
-
-
1
1957
-
2
-
-
2
1958
1
2
-
-
3
1959
...
...
...
...
...
1960
1
-
-
4
5
1961
20
-
-
-
20
1962
36
-
-
8
44
1963
2
26
-
1
29
1964
1
4
-
-
5
1966
-
-
42
-
42
1967
-
-
4
-
4
1968
4
15
4
20
43
Total
65
50
50
33
198

NOTE: In 1965 antibody response to dengue virus in 2 cases only.
… = Data not available.