Selvaraj Stephen

ORCID: 0000-0003-0103-4061
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About
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Research Areas
  • Vector-borne infectious diseases
  • Viral Infections and Vectors
  • Mosquito-borne diseases and control
  • Vector-Borne Animal Diseases
  • Vibrio bacteria research studies
  • Yersinia bacterium, plague, ectoparasites research
  • Viral gastroenteritis research and epidemiology
  • Leptospirosis research and findings
  • Antibiotic Resistance in Bacteria
  • Salmonella and Campylobacter epidemiology
  • Escherichia coli research studies
  • Transplantation: Methods and Outcomes
  • Animal Diversity and Health Studies
  • Herpesvirus Infections and Treatments
  • Ocular Surface and Contact Lens
  • Mycobacterium research and diagnosis
  • Brucella: diagnosis, epidemiology, treatment
  • Rabies epidemiology and control
  • Plant Virus Research Studies
  • SARS-CoV-2 and COVID-19 Research
  • Global Health and Epidemiology
  • Microbial infections and disease research
  • Veterinary medicine and infectious diseases
  • Ocular Infections and Treatments
  • Reproductive tract infections research

Christian Medical College, Vellore
2020-2023

Mahatma Gandhi Medical College and Research Institute
2012-2021

Sri Balaji Vidyapeeth University
2017-2021

Gandhi Medical College
2011

The University of Queensland
2006-2007

Government of Karnataka
1975

Kasturba Medical College, Manipal
1975

RNAdb is a comprehensive database of mammalian non-protein-coding RNAs (ncRNAs). There increasing recognition that ncRNAs play important regulatory roles in multicellular organisms, and there an expanding rate discovery novel as well allocation function. In this update to RNAdb, we provide nucleotide sequences annotations for tens thousands non-housekeeping ncRNAs, including wide range microRNAs, small nucleolar larger mRNA-like ncRNAs. Some these have documented functions and/or expression...

10.1093/nar/gkl926 article EN cc-by-nc Nucleic Acids Research 2006-12-03

Mammalian genomes contain millions of highly conserved noncoding sequences, many which are regulatory. The most extreme examples the 481 ultraconserved elements (UCEs) that identical over at least 200 bp in human, mouse, and rat show 96% identity with chicken, diverged approximately 310 MYA. If substitution rate UCEs remained constant, these should also be present a high level fish (approximately 450 Myr), but this is not case, suggesting appeared amniotes or tetrapods molecular clock has...

10.1093/molbev/msm268 article EN Molecular Biology and Evolution 2007-12-04

Emergence of atypical enteropathogenic Escherichia coli (EPEC) and hybrid E. (harboring genes more than one DEC pathotypes) strains have complicated the issue growing antibiotic resistance in diarrhoeagenic (DEC). This ongoing evolution occurs nature predominantly via horizontal gene transfers involving mobile genetic elements like integrons notably class 1 integron. study was undertaken to determine virulence pattern among circulating a tertiary care center south India. Diarrhoeal stool...

10.1186/s41043-018-0147-z article EN cc-by Journal of Health Population and Nutrition 2018-07-13

We studied the prevalence of ceftazidime resistance in Pseudomonas aeruginosa and rates extended-spectrum β-lactamase (ESBL), AmpC (AmpC) metallo-β-lactamase (MBL) production among resistant aeruginosa. A very high rate MBL was observed, which suggested it to be an important contributing factor for

10.1590/s1517-83822011000400006 article EN Brazilian Journal of Microbiology 2011-12-01

Clinical Evaluation of Rapid Diagnostic Test Kit for Scrub Typhus with Improved PerformanceDiagnosis scrub typhus is challenging due to its more than twenty serotypes and the similar clinical symptoms other acute febrile illnesses including leptospirosis, murine hemorrhagic fever renal syndrome.Accuracy rapidity a diagnostic test Orientia tsutsugamushi an important step diagnose this disease.To discriminate from diseases, improved ImmuneMed (RDT) was evaluated in Korea Sri Lanka.The...

10.3346/jkms.2016.31.8.1190 article EN cc-by-nc Journal of Korean Medical Science 2016-01-01

The southern part of India has witnessed an increase in scrub typhus (ST) during the past ten years. ST outbreaks occurred winter months but at intervals one to three With only a few reports Puducherry, this study was undertaken look for persistence cases Puducherry and Tamil Nadu months.During relatively cooler September, 2012 March, 2013, total 45 patients with fever clinical suspicion who provided both acute convalescent blood samples were included. Total WBC, platelet counts, serum...

10.4103/0971-5916.171289 article EN The Indian Journal of Medical Research 2015-01-01

Letters1 September 1975Human Infection with Aeromonas Species: Varied Clinical ManifestationsS. STEPHEN, M.SC., K. N. ACHYUTHA RAO, PH.D., M. SITARAM KUMARB, B.SC., R. INDRANI, B.SC.S. M.SC.Search for more papers by this author, PH.D.Search B.SC.Search authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-83-3-368 SectionsAboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail ExcerptThere have been very...

10.7326/0003-4819-83-3-368 article EN Annals of Internal Medicine 1975-09-01

We report a case of keratomycosis caused by <i>Exserohilum rostratum</i>. A 46-year-old farmer presented with history pain, watery discharge and redness the right eye for past 2 weeks following trauma vegetable matter. On ocular examination, central corneal ulcer about 8 mm greyish-white slough, feathery edges diffuse edema was seen in eye. KOH examination scrapings revealed thick, brown, branched, septate hyphae. Culture on Sabouraud dextrose agar showed velvety greenish-black colony black...

10.4103/0377-4929.97896 article EN cc-by-nc-sa Indian Journal of Pathology and Microbiology 2012-01-01

Rickettsial diseases are important re-emerging infections that mostly go unnoticed or misdiagnosed. Though few case reports of Indian tick typhus have been reported in literature the past 10 yr, prevalence surveys and far between. The objective this research was to study seroprevalence spotted fever (SF) group rickettsiosis its coinfection with scrub (ST) Puducherry region south India, as these two may show similar clinical presentations.During 2012-2015, paired sera 320 febrile patients...

10.4103/0972-9062.242562 article EN cc-by-nc-sa Journal of Vector Borne Diseases 2018-01-01

Scrub typhus (ST) caused by Orientia tsutsugamushi and transmitted chiggers of trombiculid mites is an important emerging infectious disease in India.Without early intervention, ST known to cause serious complications high morbidity; thus, awareness this among physicians availability serological kits can contribute the control rickettsiosis.A survey conducted 1970s revealed prevalence few parts India (1); however, outbreaks cases started appear several states during last 10 years, some which...

10.7883/yoken.66.552 article EN Japanese Journal of Infectious Diseases 2013-01-01

Dengue is known for its serious life-threatening complications. New rapid kits available recently in India target circulating non-structural protein (NS1) antigen from day one onwards. The sensitivity and specificity of a newly introduced combo kit against two conventional ELISA assessed. performance this quite satisfactory since excellent agreement 94.26% was observed with particular reference to NS1 detection among all three namely Rapid SD Bioline dengue Duo (SD Korea), InBios DENV Detect...

10.4103/0377-4929.130905 article EN cc-by-nc-sa Indian Journal of Pathology and Microbiology 2014-01-01

Background and Aim:In the course of our Indian Council Medical Research project on coxiellosis in Puducherry Tamil Nadu, 5.64% goat, 1.85% sheep, 1.06% buffaloes, 0.97% cattle were positive for Coxiella burnetii antibodies by enzyme linked immunosorbent assay kit (IDEXX, Liebefeld, Switzerland).In this preliminary study, we have proceeded to look C. DNA those antibody specimens employing an imported commercial polymerase chain reaction (PCR) kit.Materials Methods: Blood samples collected...

10.14202/vetworld.2017.667-671 article EN cc-by Veterinary World 2017-06-01

Query (Q) fever is an important zoonosis and a cause of concern for humans, due to the potential bioterrorism threat posed by causative agent,

10.7860/jcdr/2017/31005.10606 article EN cc-by-nc-nd JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH 2017-01-01

Background: Investigation of extra pulmonary tuberculosis (EPTB) in and around Pondicherry is being carried out since August 2011 our tertiary care super specialty hospital. Objectives: To compare the rapid Kit SD Bio-Line MPT 64 Ag with conventional time consuming biochemical tests. Confirmation Mycobacterium at a reasonable frame main thrust. Materials Methods: Thirty three four Non-Tuberculous Mycobacteria (NTM) grown MGIT960 system/Lowenstein-Jensen media (LJ) were examined by antigen...

10.4103/0255-0857.150912 article EN Indian Journal of Medical Microbiology 2015-02-01

Contrary to the earlier view that Scrub Typhus (ST) is a disease of Far East, it now known be more widely prevalent. In India, ST has been reported from several areas where was previously unknown. An outbreak involving 40 children in small hamlet Southern India during five cooler months, November, 2011 March, 2012 described this paper. The clinical suspicion based on fever along with features such as presence an eschar, hepatomegaly, thrombocy- topenia, raised hepatic enzymes, etc. A...

10.3233/jpi-130392 article EN Journal of Pediatric Infectious Diseases 2015-07-28

Background: Biofilm is a complex aggregate of microorganisms in which cells adhere to each other surface self-produced matrix extra-cellular polymeric substance. Antibiotic resistance bacteria the biofilm mode growth contributes chronicity infections. Aims: This study was aimed find out prevalence producers among isolated from our setup and their antimicrobial susceptibility pattern with special reference Extended Spectrum β-lactamase (ESBL) AmpC producers. Settings Design: It prospective,...

10.4103/2249-5975.119797 article EN Scholars' research journal/Scholars research journal 2012-01-01

Background &amp; objectives: Seroprevalence of Q fever (QF) caused by Coxiella burnetii has been reported from different parts India. Usually serological/molecular tests are employed for detection infection. The present study was undertaken to verify the validity three QF phase II IgM ELISA kits acute diagnosis comparing with gold standard indirect fluorescent antibody assay (IFA). Methods: Fifty eight serum samples collected 42 patients (26 provided sample only and 16 both convalescent...

10.4103/ijmr.ijmr_1815_15 article EN The Indian Journal of Medical Research 2017-09-01
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