Malar J. 2005 Dec 8; 4 (1):58
| Dịch tễ học về bệnh sốt rét rừng ở miền Trung Việt Nam: một khảo sát trên phạm vi rộng và đa ngành | |
| Epidemiology of forest malaria in central Vietnam: a large scale cross-sectional survey | |
| Tạp chí Malar J. 2005 Dec 8; 4 (1):58 | |
| Tác giả | Erhart A, Ngo TD, Phan KV, Ta TT, Van Overmeir C, Speybroeck N, Obsomer V, Le HX, Le TK, Coosemans M, D'Alessandro U. |
| Nơi thực hiện |
1Prince
Leopold
Institute
of
Tropical
Medicine,
Nationalestraat
155,
2000
Antwerp,
Belgium
2National Institute for Malariology, Parasitology and Entomology, Luong The Vinh street, BC 10200 Tu Liem district, Hanoi, Vietnam 3Provincial Centre for Malariology, Parasitology and Entomology, 156 Ngo Gia Tu Street, Phan Rang city, Ninh Thuan province, Vietnam |
| Từ khóa | Dịch tễ, Sốt rét rừng, miền Trung Việt Nam |
| DOI URL PDF | |
English[sửa]
In Vietnam, a large proportion of all malaria cases and deaths occurs in the central mountainous and forested part of the country. Indeed, forest malaria, despite intensive control activities, is still a major problem which raises several questions about its dynamics. A large-scale malaria morbidity survey to measure malaria endemicity and identify important risk factors was carried out in 43 villages situated in a forested area of Ninh Thuan province, south central Vietnam. Four thousand three hundred and six randomly selected individuals, aged 10-60 years, participated in the survey. Rag Lays (86%), traditionally living in the forest and practising "slash and burn" cultivation represented the most common ethnic group. The overall parasite rate was 13.3% (range [0-42.3] while Plasmodium falciparum seroprevalence was 25.5% (range [2.1-75.6]). Mapping of these two variables showed a patchy distribution, suggesting that risk factors other than remoteness and forest proximity modulated the human-vector interactions. This was confirmed by the results of the multivariate-adjusted analysis, showing that forest work was a significant risk factor for malaria infection, further increased by staying in the forest overnight (OR= 2.86; 95%CI [1.62; 5.07]). Rag Lays had a higher risk of malaria infection, which inversely related to education level and socio-economic status. Women were less at risk than men (OR=0.71; 95%CI [0.59; 0.86]), a possible consequence of different behaviour. This study confirms that malaria endemicity is still relatively high in this area and that the dynamics of transmission is constantly modulated by the behaviour of both humans and vectors. A well-targeted intervention reducing the "vector/forest worker" interaction, based on long-lasting insecticidal material, could be appropriate in this environment.
