Mathurot DuangchanchotRapee Inpunkaew.Pravate ThongsiriNobuhito HayashimotoNobuhiro GemmaMasaru NikaidoMasayoshi TakahashiKanchana Kengkoom2015-02-202018-08-192015-02-202018-08-1920142015-02-202014Experimental Animals. Vol. 63, No. 2 (2014),169–173https://repository.li.mahidol.ac.th/handle/20.500.14594/22820Prevalence of Helicobacter is mostly unknown in laboratory animals in Thailand. The 221 mice feces/cecum from 8 universities, 2 pharmaceutical companies and 3 research institutions in Thailand were surveyed for the prevalence and distribution of Helicobacter species by using the Electrochemical DNA chip. Helicobacter were detected 23/46 samples in Specific Pathogen Free (SPF) and 168/175 in conventional condition. Prevalence of Helicobacter were 98%, 96%, 92% and 78% in South (n=40), Northeast (n=40), North (n=25) and Central area (n=116), respectively. Only Central area holds SPF facility resulting in Helicobacter prevalence that seems to be lower than other areas. Three species of Helicobacter were detected in feces/cecum samples by sequence analysis: H. rodentium (67.0%, 148 samples), Helicobacter sp. MIT 01-6451 (15.4%, 34 samples), and unidentified Helicobacter species (14.1%, 9 samples). The results suggested that H. rodentium is the most common species of Helicobacter in laboratory mice in Thailand.engMahidol UniversityDNA chipHelicobacterlaboratory mice,revalenceArticleJapanese association for Laboratory animal science10.1538/expanim.63.169