Severe Dengue Epidemic, Sri Lanka, 2017.

Abstract:

:In 2017, a dengue epidemic of unexpected magnitude occurred in Sri Lanka. A total of 186,101 suspected cases and 440 dengue-related deaths occurred. We conducted a comprehensive analysis of this epidemic by comparing national surveillance data for 2017 with data from the preceding 5 years. In all Sri Lanka districts, dengue incidence in 2017 increased significantly over incidence during the previous 5 years. Older schoolchildren and young adults were more clinically symptomatic than those at extremes of age. Limited virologic surveillance showed the dominant circulating variant was dengue virus type 2 cosmopolitan genotype in the most affected district. One quarter of total annual cases were reported 5 weeks after the southwest monsoon started. Changes in vector abundance were not predictive of the increased incidence. Direct government expenditures on dengue control activities in 2017 were US $12.7 million. The lessons learned from this outbreak are useful for other tropical nations facing increasing dengue incidence.

journal_name

Emerg Infect Dis

authors

Tissera HA,Jayamanne BDW,Raut R,Janaki SMD,Tozan Y,Samaraweera PC,Liyanage P,Ghouse A,Rodrigo C,de Silva AM,Fernando SD

doi

10.3201/eid2604.190435

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

682-691

issue

4

eissn

1080-6040

issn

1080-6059

journal_volume

26

pub_type

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