Analysing the characteristics of a measles outbreak in Houaphanh province to guide measles elimination in the Lao People's Democratic Republic

Authors

  • Bounthanom Sengkeopraseuth Lao People’s Democratic Republic Field Epidemiology Training Programme; National Center for Laboratory and Epidemiology, Lao People’s Democratic Republic
  • Bouaphanh Khamphaphongphane National Center for Laboratory and Epidemiology, Lao People's Democratic Republic
  • Phengta Vongphrachanh National Center for Laboratory and Epidemiology, Lao People's Democratic Republic
  • Anonh Xeuatvongsa National Immunization Programme, Lao People’s Democratic Republic
  • Sisouveth Norasingh National Immunization Programme, Lao People’s Democratic Republic
  • Chansay Pathammvong National Immunization Programme, Lao People’s Democratic Republic
  • Manilay Phengxay World Health Organization, Lao People’s Democratic Republic
  • Phanmanisone Philakong World Health Organization, Lao People’s Democratic Republic
  • Siddhartha Sankar Datta World Health Organization, Lao People’s Democratic Republic

DOI:

https://doi.org/10.5365/wpsar.2017.8.1.012

Abstract

Introduction: In recent years, the incidence of measles has declined in the Lao People's Democratic Republic. However, an outbreak was reported in August 2014 in Houaphanh province, which was the biggest outbreak in the country since 2008. We describe the characteristics of this outbreak and outline critical interventions for the Lao People's Democratic Republic to achieve measles elimination.

Methods: Fever and rash cases in the Khouan and Samtai districts with an onset date from 1 September to 25 October 2014 were investigated. Active case finding and health facility record reviews were carried out. Appropriate samples from the individuals with suspected measles were tested to confirm the diagnosis.

Results: A total of 265 suspected cases including 12 deaths were reported from eight villages in the Khouan and Samtai districts. Forty-five individuals tested positive for measles IgM. Most of the confirmed patients were male (n = 28, 62%), less than 5 years old (n = 23, 51%) and from the Hmong ethnic community (n = 44, 98%). The majority of the people with suspected measles (n = 213, 80%) and all the confirmed ones were unvaccinated. A measles vaccination campaign conducted in the eight affected villages resulted in 76% coverage of the targeted population.

Discussion: Low routine coverage and measles occurrence among unvaccinated individuals indicate underimmunized areas. The geographical and sociodemographic characteristics of this outbreak highlight the need for tailored vaccination strategies to close the immunity gap. A sensitive surveillance system that is able to detect, notify, investigate and guide response measures, including a second measles dose in the routine immunization schedule, will be essential for the Lao People's Democratic Republic to attain its measles elimination status.

Author Biography

Bounthanom Sengkeopraseuth, Lao People’s Democratic Republic Field Epidemiology Training Programme; National Center for Laboratory and Epidemiology, Lao People’s Democratic Republic

Lao PDR Field Epidemiology Training Programme

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Published

27-07-2018

How to Cite

Sengkeopraseuth, B., Khamphaphongphane, B., Vongphrachanh, P., Xeuatvongsa, A., Norasingh, S., Pathammvong, C., Phengxay, M., Philakong, P., & Datta, S. S. (2018). Analysing the characteristics of a measles outbreak in Houaphanh province to guide measles elimination in the Lao People’s Democratic Republic. Western Pacific Surveillance and Response, 9(3). https://doi.org/10.5365/wpsar.2017.8.1.012

Issue

Section

Original Research