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  • Title: Hemorrhagic fever in Cambodia is caused by dengue viruses: evidence for transmission of all four serotypes.
    Author: Rathavuth H, Vaughn DW, Minn K, Nimmannitya S, Nisalak A, Raengsakulrach B, Rorabaugh ML, Yuvatha K, Sophal O.
    Journal: Southeast Asian J Trop Med Public Health; 1997 Mar; 28(1):120-5. PubMed ID: 9322294.
    Abstract:
    Hemorrhagic fever (HF) has been widespread in Cambodia and thought to be due to dengue virus although laboratory confirmation has been lacking. Between 1980 and 1995, 49,420 cases of HF and 3,032 deaths were reported. Cases increased during this period; large epidemics of HF occurred every two to three years. In 1995 there were 10,208 cases of HF with 424 deaths. Over a two day period in August 1995, 40 consecutive cases were investigated at the National Pediatric Hospital in Phnom Penh, Cambodia. All 40 cases were confirmed as dengue by virus identification and/or serology. Mean age was 6.5 years. Of 39 patients with complete medical records, the diagnoses were: dengue fever (n = 3), dengue hemorrhagic fever (DHF) grade 2 (n = 21), DHF grade 3 (n = 10), and DHF grade 4 (n = 5). The serologic response was secondary in 95%. Dengue virus was identified in 13 of 40 cases. All four dengue serotypes were identified. The high frequency of secondary infections, the low mean age of admission, and identification of all four dengue serotypes support the national statistics to show that DHF is highly endemic in Cambodia.
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