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-
1
Bengston IA, 1945. Apparent serological heterogeneity among strains of tsutsugamushi disease (scrub typhus). Public Health Rep 50 :1483–1489.
-
2
Kollars TM Jr, Tippayachai B, Bodhidatta D, 2001. Temporal changes in prevalence of scrub typhus Rickettsia (Orientia tsutsugamushi) infecting the eggs of Leptotrombidium imphalum(Acari: Trombiculidae). J Med Entomol 38 :108–110.
-
3
Ohashi N, Fukuhara M, Shimada M, Tamura A, 1995. Phylogenetic position of Rickettsia tsutsugamushi and the relationship among its antigenic variants by analysis of 16sRNA gene sequences. FEMS Microbiol Lett 125 :299–304.
-
4
Strickman D, Sheer T, Salata K, Hershey J, Dasch G, Kelly D, Kuschner R, 1995. In vitro effectiveness of azithromycin against doxycycline-resistant and susceptible strains of Rickettsia tsutsugamushi, etiologic agent of scrub typhus. Antimicrob Agents Chemother 39 :2406–2410.
-
5
Elisberg BL, Campbell JM, Bozeman FM, 1968. Antigenic diversity of Rickettsia tsutsugamushi: epidemiologic and ecologic significance. J Hyg Epidemiol Microbiol Immunol 12 :18–25.
-
6
Shirai A, Tanskul PL, Andre RG, Dohany AL, Huxsoll DL, 1981. Rickettsia tsutsugamushi strains found in chiggers collected in Thailand. Southeast Asian J Trop Med Public Health 24 :145–153.
-
7
Frances SP, Wathcarapichat P, Phulsuksombati D, Tanskul P, 1999. Occurrence of Orientia tsutsugamushi in chiggers (Acari: Trombiculidae) and small animals in an orchard near Bangkok, Thailand. J Med Entomol 36 :449–453.
-
8
Tanskul PL, Linthicum KJ, 1997. A new species of Leptotrombidium (Acari: Trombiculidae) collected in active rice fields in northern Thailand. J Med Entomol 34 :368–371.
-
9
Kollars TM Jr, Tippayachai B, Phulsuksombati D, Bodhidatta D, Lerdthusnee K, Coleman RE, 2000. Variation in weight loss in Mus musculus fed upon by Leptotrombidium chiangraiensis and Leptotrombidium imphalum (Acari: Trombiculidae) infected with two strains of Orientia tsutsugamushi. Int J Acarol 26 :173–176.
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10
Watt G, Chouriyagune C, Ruangweerayud R, Watcharapichat P, Phulsuksombati D, Jongsakul K, Teja-Isavadharm P, Bhodihidatta D, Corcoran K, Dasch GA, Strickman D, 1996. Scrub typhus infections poorly responsive to antibiotics in northern Thailand. Lancet 348 :86–89.
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11
Stover C, Marana D, Carter J, Roe B, Mardis E, Oaks E, 1990. The 56-kilodalton major protein antigen of Rickettsia tsutsugamushi: molecular cloning and sequence analysis of the sta 56 gene and precise identification of a strain-specific epitope. Infect Immun 58 :2076–2084.
-
12
Enatsu T, Urakam H, Tamura A, 1999. Phylogenetic analysis of Orientia tsutsugamushi strains based on the sequence homologies of 56-kDa type-specific antigen genes. FEMS Microbiol Lett 180 :163–169.
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SHORT REPORT: VARIATION IN THE 56-KD TYPE-SPECIFIC ANTIGEN GENE OF ORIENTIA TSUTSUGAMUSHI ISOLATED FROM PATIENTS IN THAILAND
THOMAS M. KOLLARS JR.
THOMAS M. KOLLARS JR.
Entomological Sciences Program, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland; Department of Biochemistry, and Department of Pathology, Division of Research, Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Department of Entomology, United States Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
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DHARADIDA BODHIDATTA
DHARADIDA BODHIDATTA
Entomological Sciences Program, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland; Department of Biochemistry, and Department of Pathology, Division of Research, Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Department of Entomology, United States Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
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DUANGPORN PHULSUKSOMBATI
DUANGPORN PHULSUKSOMBATI
Entomological Sciences Program, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland; Department of Biochemistry, and Department of Pathology, Division of Research, Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Department of Entomology, United States Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
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BOURSARAPORN TIPPAYACHAI
BOURSARAPORN TIPPAYACHAI
Entomological Sciences Program, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland; Department of Biochemistry, and Department of Pathology, Division of Research, Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Department of Entomology, United States Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
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RUSSELL E. COLEMAN
RUSSELL E. COLEMAN
Entomological Sciences Program, United States Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, Maryland; Department of Biochemistry, and Department of Pathology, Division of Research, Royal Thai Army Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; Department of Entomology, United States Army Medical Component, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
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The sequences of a 300-base pair region of the 56-kD type-specific antigen gene from 12 Orientia tsutsugamushi isolates from Thailand were compared with isolates from other regions in Asia. A high degree of heterogeneity was found among the 12 Thai isolates, with the C3 strain most commonly found. The abundance of the C3 strain of O. tsutsugamushi is of particular concern because doxycycline and chloramphenicol resistance have previously been reported in this strain.
Author Notes
ProCite
RefWorks
Reference Manager
BibTeX
Zotero
EndNote
-
1
Bengston IA, 1945. Apparent serological heterogeneity among strains of tsutsugamushi disease (scrub typhus). Public Health Rep 50 :1483–1489.
-
2
Kollars TM Jr, Tippayachai B, Bodhidatta D, 2001. Temporal changes in prevalence of scrub typhus Rickettsia (Orientia tsutsugamushi) infecting the eggs of Leptotrombidium imphalum(Acari: Trombiculidae). J Med Entomol 38 :108–110.
-
3
Ohashi N, Fukuhara M, Shimada M, Tamura A, 1995. Phylogenetic position of Rickettsia tsutsugamushi and the relationship among its antigenic variants by analysis of 16sRNA gene sequences. FEMS Microbiol Lett 125 :299–304.
-
4
Strickman D, Sheer T, Salata K, Hershey J, Dasch G, Kelly D, Kuschner R, 1995. In vitro effectiveness of azithromycin against doxycycline-resistant and susceptible strains of Rickettsia tsutsugamushi, etiologic agent of scrub typhus. Antimicrob Agents Chemother 39 :2406–2410.
-
5
Elisberg BL, Campbell JM, Bozeman FM, 1968. Antigenic diversity of Rickettsia tsutsugamushi: epidemiologic and ecologic significance. J Hyg Epidemiol Microbiol Immunol 12 :18–25.
-
6
Shirai A, Tanskul PL, Andre RG, Dohany AL, Huxsoll DL, 1981. Rickettsia tsutsugamushi strains found in chiggers collected in Thailand. Southeast Asian J Trop Med Public Health 24 :145–153.
-
7
Frances SP, Wathcarapichat P, Phulsuksombati D, Tanskul P, 1999. Occurrence of Orientia tsutsugamushi in chiggers (Acari: Trombiculidae) and small animals in an orchard near Bangkok, Thailand. J Med Entomol 36 :449–453.
-
8
Tanskul PL, Linthicum KJ, 1997. A new species of Leptotrombidium (Acari: Trombiculidae) collected in active rice fields in northern Thailand. J Med Entomol 34 :368–371.
-
9
Kollars TM Jr, Tippayachai B, Phulsuksombati D, Bodhidatta D, Lerdthusnee K, Coleman RE, 2000. Variation in weight loss in Mus musculus fed upon by Leptotrombidium chiangraiensis and Leptotrombidium imphalum (Acari: Trombiculidae) infected with two strains of Orientia tsutsugamushi. Int J Acarol 26 :173–176.
-
10
Watt G, Chouriyagune C, Ruangweerayud R, Watcharapichat P, Phulsuksombati D, Jongsakul K, Teja-Isavadharm P, Bhodihidatta D, Corcoran K, Dasch GA, Strickman D, 1996. Scrub typhus infections poorly responsive to antibiotics in northern Thailand. Lancet 348 :86–89.
-
11
Stover C, Marana D, Carter J, Roe B, Mardis E, Oaks E, 1990. The 56-kilodalton major protein antigen of Rickettsia tsutsugamushi: molecular cloning and sequence analysis of the sta 56 gene and precise identification of a strain-specific epitope. Infect Immun 58 :2076–2084.
-
12
Enatsu T, Urakam H, Tamura A, 1999. Phylogenetic analysis of Orientia tsutsugamushi strains based on the sequence homologies of 56-kDa type-specific antigen genes. FEMS Microbiol Lett 180 :163–169.
| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 510 | 433 | 7 |
| Full Text Views | 241 | 6 | 0 |
| PDF Downloads | 56 | 11 | 0 |