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Am. J. Trop. Med. Hyg., 74(2), 2006, pp. 263-265
Copyright © 2006 by The American Society of Tropical Medicine and Hygiene

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SHORT REPORT


ORIGIN OF DENGUE TYPE 3 VIRUSES ASSOCIATED WITH THE DENGUE OUTBREAK IN DHAKA, BANGLADESH, IN 2000 AND 2001

GOUTAM PODDER, ROBERT F. BREIMAN, TASNIM AZIM, HLAING MYAT THU, NILUKA VELATHANTHIRI, LE QUYNH MAI, KYM LOWRY, AND JOHN G. AASKOV*
Center for Health and Population Research, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh; Department of Medical Research, Yangon, Myanmar; Department of Microbiology, University of Sri Jayawardenapura, Colombo, Sri Lanka; National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; School of Life Sciences, Queensland University of Technology, Brisbane, Queensland, Australia

 

ABSTRACT

Dengue and dengue hemorrhagic fever re-emerged in Bangladesh in 2000 and 2001 and nearly all viruses isolated were dengue type 3. Phylogenetic analyses of the envelope genes of examples of these viruses indicated that they were most closely related to recently emerged dengue type 3 viruses from neighboring Thailand and Myanmar but distinct from those from India and Sri Lanka. Since this strain of dengue virus type 3 had not been associated with unusual patterns of disease in Thailand or Myanmar, it suggested that the outbreak in Bangladesh was due to local factors after the introduction of viruses from countries to the east rather than to the evolution of an unusually virulent strain of virus in Bangladesh.

Received April 18, 2005. Accepted for publication September 9, 2005.

Acknowledgments: We acknowledge the assistance of Dr. Truong Uyen Ninh (National Institute of Hygiene and Epidemiology, Hanoi), Drs. Yukiko Wagatsuma, Mahbubur and Abdul Kashem Siddique (International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka), Drs. Jean-Marc Reynes and Sivuth Ong (Institut Pasteur du Cambodge, Phnom Penh, Cambodia), and Drs. Tim Endy and Ananda Nisalak (Armed Forces Institute for Medical Research, Bangkok) in obtaining material for this study.

Financial support: This study was supported by grants from the Lee Foundation and the Wellcome Trust.

* Address correspondence to John G. Aaskov, School of Life Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia. E-mail: j.aaskov{at}qut.edu.au

Authors’ addresses: Goutam Podder, Robert F. Breiman, and Tasnim Azim, Center for Health and Population Research, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh, E-mails: podder{at}icddrb.org, rbreiman{at}cdcnairobi.mimcom.net, and tasnim{at}icddrb.org. Hlaing Myat Thu, Department of Medical Research, Yangon, Myanmar, E-mail: hmthu{at}mptmail.net.mm. Nikula Velathanthiri, Department of Microbiology, University of Sri Jayawardenapura, Colombo, Sri Lanka, E-mail: niluv{at}sjp.ac.lk. Le Quynh Mai, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam, E-mail: lom9{at}hotmail.com. Kym Lowry and John G. Aaskov, School of Life Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia, E-mails: lkym{at}hotmail.com and j.aaskov{at}qut.edu.au.






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Copyright © 2006 by the American Society of Tropical Medicine and Hygiene.