Malaria Investigation in Danchang Sub-District, Naklang District, Nong Bua Lamphu Province, October 25-26, 2022

Abstract

On october 19, 2022, at 08:49 a.m., The Vector-borne Disease Control Center 8.2, Loei Province, was received information from Nong Bua Lam Phu Public Health Provincial Office. Confirmed 1 case of malaria was found admitted at Naklang Hospital. Joint Investigation team of Vector-borne Disease Control Center 8.2, Loei Province went to investigation with aimed to find source of infection to follow up treatment to study the prevalence of mosquitoes and to determine preventive measures. The results of investigation revealed 28 years old male patient, worked as a contractor in a stone mill in The Republic of Sudan for 1 year. While working, he infected with malaria and returned to Thailand on October 4,2022, then onset on October 16, 2022 with fever, chills and muscle pain. He was admitted at Na klang Hospital on October18, 2022. Plasmodium falciparum ring form 59,600/mL and ring form 58,600/mL were detected by Thick film and Thin film test, respectively. The patient was referred to Udon Thani Hospital on October 19, 2022. The results of environmental survey were dense community and no additional patients. There was one natural pond near village and two pond that dig for agriculture. The results of mosquito’s survey found that 2 adults Anopheles aconitus and 7 Anopheles campestris and 10 Anopheles campestris larvae. In summary this patient was imported case because these areas haven’t been reported for more than 3 years and no found primary vector. Therefore, we have to follow up treatment and surveillance for people who travelling from Sudan and provide health education for protect themselves from mosquito bites.