TABLE 1.
Laboratory confirmation of DENV serotypes involved in the outbreaks in the early period
| Year | Location | Isolated virus | Identification by retrospective serologya | Reference(s) |
|---|---|---|---|---|
| 1924-1925 | Philippines | DENV-4 | 54 | |
| 1925-1926 | Australia | DENV-1 | 36 | |
| 1927 | South Africa | DENV-1 | 72 | |
| 1927-1928 | Greece | DENV-1 (DENV-2)b | 113 | |
| 1929-1930 | Philippines | DENV-1 | 54 | |
| 1929-1933 | Greece | DENV-2c | 128 | |
| 1941-1942 | Panamá | DENV-2 | 129 | |
| 1942-1944 | Australia | DENV-2 (DENV-1) | 36 | |
| 1942-1944 | Japan (Nagasaki/Osaka) | DENV-1 (DENV-2)b | 40, 152 | |
| 1943 | Singapore | DENV-1 | 132 | |
| 1943 | Japan (Nagasaki) | DENV-1 | 68 | |
| 1943-1944 | Hawaii | DENV-1 | DENV-1 | 65, 132 |
| 1944 | French Polynesia | DENV-1 | 129 | |
| 1944 | New Guinea | DENV-1, DENV-2 | 132 | |
| 1944 | Guam | DENV-1 (DENV-2) | 65, 132 | |
| 1945 | India | DENV-1 | 132 |
a
Only the serotypes that were laboratory confirmed are listed. The list does not necessarily indicate that these were the only serotypes involved in particular outbreaks.
b
A monotypic reaction to the serotype in parentheses was less often detected but indicates a strong possibility of concurrent activity of two serotypes.
c
No other document corroborating a dengue outbreak in this period was found in the early literature.