Volume 6, Number 6—December 2000
Perspective
Trends in Flavivirus Infections in Japan
Table
Cases of imported dengue and countries that persons visited before onset of symptoms, by year, Japan
| Countries | '85 | '86 | '87 | '88 | '89 | '90 | '91 | '92 | '93 | '94 | '95 | '96 | '97 | '98 | '99 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of casesa | 4 | 1 | 4 | 4 | 1 | 11b | 6b | 14 | 7 | 11 | 16 | 15 | 6 | 42 | 11 | 153 |
| Asia | ||||||||||||||||
| Thailand | 3 | 0 | 3 | 1 | 0 | 7 | 3 | 7 | 1 | 6 | 8 | 4 | 1 | 19 | 2 | 65 |
| India | 0 | 0 | 2 | 0 | 0 | 2 | 1 | 2 | 1 | 1 | 4 | 5 | 0 | 6 | 3 | 27 |
| Philippines | 2 | 1 | 1 | 1 | 0 | 1 | 3 | 1 | 3 | 1 | 1 | 1 | 1 | 8 | 1 | 26 |
| Indonesia | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 3 | 1 | 2 | 2 | 3 | 1 | 5 | 0 | 18 |
| Malaysia | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 1 | 1 | 8 |
| Myanmar | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 3 | 4 | 8 |
| Cambodia | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 3 | 1 | 7 |
| Singapore | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 0 | 7 |
| Nepal | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 5 |
| Laos | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 0 | 5 |
| Vietnam | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 0 | 4 |
| Bangladesh | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 3 |
| Maldives | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 |
| Taiwan | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| China | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 |
| Sri Lanka | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Oceania/South Pacific | ||||||||||||||||
| Australia | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Fiji | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| New Caledonia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| Tahiti | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| Central America | ||||||||||||||||
| Dominica | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Guatemala | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Africa | ||||||||||||||||
| Nigeria | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
| Liberia | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Côte d'Ivoire | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
aSome patients visited more than one country.
bIn 1990 and 1991, one patient each year had dengue hemorrhagic fever.
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