Concurrent infections by all four dengue virus serotypes during an outbreak of dengue in 2006 in Delhi, India

Co-circulation of multiple dengue virus serotypes has been reported from many parts of the world including India, however concurrent infection with more than one serotype of dengue viruses in the same individual is rarely documented. An outbreak of dengue hemorrhagic fever/dengue shock syndrome (DHF...

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Published inVirology journal Vol. 5; no. 1; p. 1
Main Authors Bharaj, Preeti, Chahar, Harendra S, Pandey, Anubhav, Diddi, Kavita, Dar, Lalit, Guleria, Randeep, Kabra, Sushil K, Broor, Shobha
Format Journal Article
LanguageEnglish
Published England BioMed Central Ltd 09.01.2008
BioMed Central
BMC
Subjects
Adolescent
Adult
Causes of
Child
Child, Preschool
Dengue
Dengue Virus - classification
Dengue Virus - genetics
Dengue Virus - isolation & purification
Dengue viruses
Diagnosis
Disease Outbreaks
Female
Genetic aspects
Health aspects
Humans
India - epidemiology
Infant
Infant, Newborn
Male
Methods
Polymerase chain reaction
Reverse Transcriptase Polymerase Chain Reaction
RNA, Viral - genetics
Serotyping
Severe Dengue - epidemiology
Severe Dengue - virology
India
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Summary:Co-circulation of multiple dengue virus serotypes has been reported from many parts of the world including India, however concurrent infection with more than one serotype of dengue viruses in the same individual is rarely documented. An outbreak of dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS) occurred in and around Delhi in 2006. This is the first report from India with high percentage of concurrent infections with different dengue virus serotypes circulating during one outbreak. Acute phase sera from patients were tested for the presence of dengue virus RNA by RT-PCR assay. Of the 69 samples tested for dengue virus RNA, 48 (69.5%) were found to be positive. All the four dengue virus serotypes were found to be co-circulating in this outbreak with DENV-3 being the predominant serotype. In addition in 9 of 48 (19%) dengue virus positive samples, concurrent infection with more than one dengue virus serotype were identified. This is the first report in which concurrent infections with different dengue virus serotypes is being reported during an outbreak from India. Delhi is now truly hyperendemic for dengue.
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ISSN:1743-422X
1743-422X
DOI:10.1186/1743-422x-5-1