Utility of multiplex reverse transcriptase-polymerase chain reaction for diagnosis and serotypic characterization of dengue and chikungunya viruses in clinical samples

Baijayantimala Mishra, Mirnalini Sharma, Sujit Kumar Pujhari, Radha Kanta Ratho, DVR V.R.S. Gopal, CVM Naresh Kumar, Gita Sarangi, Nirupama Chayani, Subhash C. Varma

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The reemergence of chikungunya virus (CHIKV) has compounded the already existing dengue problem because of clinical similarities and common vector, demanding the need for a rapid and specific diagnosis. Thus, dengue chikungunya multiplex reverse transcriptase-polymerase chain reaction (DCmRT-PCR) was developed and validated for simultaneous detection of dengue and chikungunya viral infections and its utility in virus serotyping. Blood samples from 97 suspected dengue and chikungunya cases and 10 healthy controls were subjected to dengue and chikungunya conventional RT-PCR and DCmRT-PCR. Thirty-one of 97 samples were positive for dengue or chikungunya viral RNA by RT-PCR and DCmRT-PCR with 100% concordance. DCmRT-PCR products were cycle sequenced. Seven dengue virus strains were clustered within genotype III of DENV-3 and 4 within genotype III of DENV-1, whereas chikungunya sequences were clustered within the Central/East African genotype. DCmRT-PCR was found to be a potential rapid test for simultaneous detection of dengue and CHIKV in clinical samples along with dengue serotyping.

Original languageEnglish (US)
Pages (from-to)118-125
Number of pages8
JournalDiagnostic Microbiology and Infectious Disease
Volume71
Issue number2
DOIs
StatePublished - Oct 1 2011

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)
  • Infectious Diseases

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