| new evidence on tick-borne rickettsioses in the altai region of russia using primary lesions, serum and blood clots of molecular and serological study. | tick-borne rickettsioses (tbrs) have similar clinical symptoms and can give serological cross-reaction. we firstly found that in the natural foci of north asian tick typhus (natt) in the altai region of russia, tbrs can be caused by two rickettsia species: rickettsia sibirica subsp. sibirica (causative agent of natt) and rickettsia heilongjiangensis. rickettsial dna was detected in primary lesions, serum samples and blood clots using real-time pcr. therefore, each case of tbrs should be verified ... | 2016 | 26344602 |