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Molecular detection of Rickettsia species in ticks collected from the southwestern provinces of the Republic of Korea

Background Rickettsiae constitute a group of arthropod-borne, Gram-negative, obligate intracellular bacteria that are the causative agents of diseases ranging from mild to life threatening that impact on medical and veterinary health worldwide. Methods A total of 6,484 ticks were collected by tick drag from June-October 2013 in the southwestern provinces of the Republic of Korea ...

Insecticide resistance and cytochrome-P450 activation in unfed and blood-fed laboratory and field populations of Culex pipiens pallens

Understanding the mechanisms of insecticide resistance to vector mosquitoes is critical for the implementation of effective control measures. A nulliparous susceptible Culex pipiens pallens (KSCP) laboratory colony and two field strains from Paju (PAJ) and Jeonju (JEO) Korea were evaluated for susceptibility to five pesticides by microapplication techniques. Unfed PAJ and JEO ...

Insecticide resistance and cytochrome-P450 activation in unfed and blood-fed laboratory and field populations of Culex pipiens pallens

Understanding the mechanisms of insecticide resistance to vector mosquitoes is critical for the implementation of effective control measures. A nulliparous susceptible Culex pipiens pallens (KSCP) laboratory colony and two field strains from Paju (PAJ) and Jeonju (JEO) Korea were evaluated for susceptibility to five pesticides by microapplication techniques. Unfed PAJ and JEO ...

Distribution of malaria vectors and incidence of vivax malaria at Korean army installations near the demilitarized zone, Republic of Korea

Background As a result of the reintroduction of malaria in the Republic of Korea (ROK) in 1993 and the threat to military and civilian populations, the Korea Military National Defense (MND) increased emphasis on vector control in 2012 at ROK Army (ROKA) installations located near the DMZ, while decreasing chemoprophylaxis, fearing potential drug resistance. Mosquito surveillance ...

Hantaan Virus Surveillance Targeting Small Mammals at Nightmare Range, a High Elevation Military Training Area, Gyeonggi Province, Republic of Korea

Rodent-borne disease surveillance was conducted at Nightmare Range (NM-R), near the demilitarized zone in northeast Gyeonggi Province, Republic of Korea, to identify hemorrhagic fever with renal syndrome (HFRS) risks for a mountainous high-elevation (500 m) military training site. Monthly surveys were conducted from January 2008-December 2009. A total of 1,720 small mammals were ...

Ecological Niche Modeling to Estimate the Distribution of Japanese Encephalitis Virus in Asia

Background Culex tritaeniorhynchus is the primary vector of Japanese encephalitis virus (JEV), a leading cause of encephalitis in Asia. JEV is transmitted in an enzootic cycle involving large wading birds as the reservoirs and swine as amplifying hosts. The development of a JEV vaccine reduced the number of JE cases in regions with comprehensive childhood vaccination programs, such ...

Plasmodium-Specific Molecular Assays Produce Uninterpretable Results and Non-Plasmodium spp. Sequences in Field-Collected Anopheles Vectors

of Research, Silver Spring, MD, E-mails: Genelle .; ; ; Vanessa .; ; ; and . Terry A. Kline, Public Health Command Region-Pacific, Camp Zama, Japan, E-mail: Terry.A.Klein2 .. Heung-Chul Kim, 5th ... Medical Detachment, 168th Multifunctional Medical Support Battalion, 65th Medical Brigade, Seoul, South Korea, E-mail: . Heung-Chul Kim and Won-Ja Lee, Division of Malaria and Parasitic Diseases, Korea

Emergence of Japanese encephalitis virus genotype V in the Republic of Korea

Background Japanese encephalitis virus (JEV) genotype V reemerged in Asia (China) in 2009 after a 57-year hiatus from the continent, thereby emphasizing a need to increase regional surveillance efforts. Genotypic characterization was performed on 19 JEV-positive mosquito pools (18 pools of Culex tritaeniorhynchus and 1 pool of Cx. bitaeniorhynchus) from a total of 64 positive pools ...

Molecular Detection and Genotyping of Japanese Encephalitis Virus in Mosquitoes during a 2010 Outbreak in the Republic of Korea

Japanese encephalitis virus (JEV), a mosquito-borne zoonotic pathogen, is one of the major causes of viral encephalitis. To reduce the impact of Japanese encephalitis among children in the Republic of Korea (ROK), the government established a mandatory vaccination program in 1967. Through the efforts of this program only 0–7 (mean 2.1) cases of Japanese encephalitis were reported ...

Decreasing incidence of Plasmodium vivax in the Republic of Korea during 2010–2012

Tong-Soo Kim Jin Su Kim Byoung-Kuk Na Won-Ja Lee Heung-Chul Kim Seung-Ki Youn Jin Gwack Hee Sung Kim PyoYun Cho Seong Kyu Ahn Seok Ho Cha Yun-Kyu Park Sung Keun Lee Yoon-Joong Kang Youngjoo Sohn

Genetic diversity of Imjin virus in the Ussuri white-toothed shrew (Crocidura lasiura) in the Republic of Korea, 2004-2010

Heung-Chul Kim Terry A Klein Richard Yanagihara Jin-Won Song 0 0 Department of Microbiology, College of Medicine, and Institute for Viral Diseases, Korea University , 5-ga, Anam-dong, Sungbuk-gu, Seoul

Biological Resistance of Hydroxychloroquine for Plasmodium vivax Malaria in the Republic of Korea

The Republic of Korea (ROK) Army instituted a vivax malaria chemoprophylaxis program (hydroxychloroquine [HCQ] 400 mg per week) in 1997 that was expanded to nearly 200,000 soldiers by 2007, raising concerns for the emergence of drug-resistant vivax malaria. Therefore, a study of whole blood HCQ concentrations for all malaria patients admitted to four ROK Army hospitals was ...