According to the Department of Preventive Medicine (Ministry of Health-MoH), the results of epidemiological surveillance of dengue fever /dengue hemorrhagic fever (DF/DHF), including patient supervision, serum and virus surveillance, and vector monitoring at some representative points in July 2010 were as follows:
Patient supervision
In July 2010, about 15,026 cases of DF/DHF and 9 deaths were recorded in the whole country, compared with June 2010 (6,440/6) increasing 2.3 times and by 3 deaths, with July 2009 (12,668/8) raising by 18.6% and by 4 deaths; the morbidity of DF/DHF in children below 15 made up 47.7% (7,170 cases). From early January to July 2010, there were 38,092 cases of DF/DHF and 31 deaths, decreasing by 15.5% in the morbidity and by 8 cases in the mortality in comparision with the same period of 2009 (45,099/39).
South Vietnam:
Having the highest morbidity of 7,635 cases (accounting for 50.8%) and 5 deaths, a 16.4% reduction of infected cases and 1 death up in comparision with the same period of July 2009 (9,131/4).
Some provinces with high morbidity and mortality included Ben Tre (1,424/1), Tien Giang (886/0), An Giang (718/0), Dong Thap (662/0), Ho Chi Minh city (623/0).
Central Vietnam
There were 4,711 cases of DF/DHF, accounting for 31.4% of the whole country's morbidity, raising twofold against the same period of July 2009 (2232/3); no increase in mortality (3 deaths).
West Highlands:
There were 2,484 DF/DHF cases, accounting for 16.5% of the whole country's morbidity, increasing 12.3 times compared with the same period of July 2009 (196 / 1); no increase in mortality (1 death).
North Vietnam
There were 196 cases of DF/DHF, accounting for 1.3% of the whole country's morbidity, reducing 5.7 times against July 2009 (1,109/0); no death from DF/DHF.
Serum and virus surveilance
In July 2010, there were 2,327 serum samples tested with Mac-Elisa technique, of which 1,141 samples were positive, accounting for 49%; the Central had the most tested-samples of 1,143 with 647 positive samples, making up 44.8%; the South had 309 positive samples over 494 tested ones, accounting for 62.6%; the West Highlands 156 over 274 samples were positive, accounting for 56.9% and the North 29 over 116 samples were positive, making up 25%.
There were 441 medical waste samples of virus isolation, detecting 125 positive samples (42 D1, 56 D2 17 10 D3 & D4).
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Institute's staff on a monitoring mission at grassroot level. |
Vector monitoring at some representative points
The results of insect monitoring in July 2010 showed the high vector indexes in the South and the Central. Some surveilance points with vector index maintaining at high level were as follows :
- Ben Tre province (Giong Trom : BI = 216, DI = 1.27; Ba Tri: BI = 174, DI = 3.63; Thanh Phu: BI = 142, DI = 0.76);
- Ba Ria-Vung Tau province (Long Dien: BI = 114, DI = 1.03);
- Tien Giang province (Go Cong Dong: BI = 128, DI = 1.6);
- Binh Thuan province (Ham Duc: BI = 82, DI = 0.84).
Activities of DF/DHF control in July 2010
- On 25 August 2010, the Institute's Scientific Board met and was unanimuos in the list of insecticides used in DF/DHF prevention period 2010-2012 and sent the meeting minutes No. 731/BB-BYT dated on 7 September 2010 to all the members.
- The Department of Preventive Medicine (MoH) issued the Document No. 526/DP-DT dated on 6 September 2010 on directing the directors of health departments and centers for preventive medicine of the provinces/cities of Ha Noi, Khanh Hoa, Phu Yen, Thua Thien-Hue, Dak Lak, Dak Nong, Gia Lai, Kon Tum, An Giang, Ben Tre, Dong Nai, Dong Thap to intensively carry out measures against DF/DHF, at the same time to coordinate with the institutes of hygiene and epidemiology, Pasteur institutes, institute of malariology parasitoligy and entomology in supervising the prevention of DF/DHF and the operation of dengue project in 2010.
- Require the provinces/cities to implement the treatment of DF/DHF epidemic focus in accordance with the instructions in Decision No. 2497/QD-BYT on 14 July 2010 by the MoH ; report on the financial management of dengue project period 2006-2010.