สถาบันวิจัยวิทยาศาสตร์สาธารณสุข

National Institute of Health of Thailand

Suveillance of plague in the provinces along Thai border

Authors : Amporn Imvithaya*, Paijit Warachit*, Pimjai Naiyagovit*, Chanpen Chuprapawan*


Affililations:       *National Institute of  Health, Department of Medical Sciences,

    Ministry of public Health, Nonthaburi 11000

           

Source:               Ministry of Public Health Journal 1998; 17(4-6): 97-105

           

Language:          Thai with English abstract

 

Abstract:

 

Surveillance of plague in the provinces along Thai border was studied for surveillance of plague in the potentially risky provences to plague transmission. Study was conducted during December 1996- December 1997 in the districts of 19 provinces along Thai-Myanmar, Loas, Cambodia and Malasia borders for rodent surveillance, and 10 western provinces along Thai-Myanmar border for canine serosurveillance. Data and result of PHA/HI test of 977 samples of rodent serum and 405 samples of canine serum were all negative, which indicated that plague not re-emerged in Thailand. In addition, results obtained from rodent surveillance showed successful updated information of rat flea index (F.1) in Thailand. Fleas  were oriental rat fleas, Xenopsylla cheopis, that were of great importance as vectors of plague. Flea index value of study areas showed signilicantly increased 1 and nearly to 1 in 5 provinces along Thai-border, namely Songkhla, Nongkhai, Narathiwat, Ranong and Chiangrai, where the measure for rodent control are needed. Experience of plague outbreak in the neighbour countries have shown that a specific index should not over 1 for Xenopsylla cheopis. In Thailand standard surveillance system of plague in the potentially risky provinces with rodent control activity should be activity participated by local communitses, The surveillance of plague by rodent and fleas data collections in epidemic areas should be done in every two or three years which depend on circumstances of each areas.