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Mean
Annual Number of DHF Cases
Thailand,
Indonesia and Vietnam, by Decade
* Provisional data through 1998
| In Southeast Asia, dengue hemorrhagic fever has been recognized
for approximately 40 years. The vast majority of the cases are
reported from Thailand, Indonesia, and Vietnam, which also have
very comprehensive surveillance systems. Per decade, the number
of DHF cases has increased—from a mean of 50,000 per year
in the 1970s to 165,000 in the 1980s and 200,000 in the 1990s. |
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