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Sri Lanka

Technical and operational underpinnings of malaria elimination from Sri Lanka

July 30, 2019 - 08:35 -- Open Access
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Author(s): 
Risintha Premaratne, Rajitha Wickremasinghe, Dewanee Ranaweera, W. M. Kumudu T. de A. W. Gunasekera, Mihirini Hevawitharana, Lalanthika Pieris, Deepika Fernando and Kamini Mendis
Reference: 
Malaria Journal 2019 18:256, 29 July 2019

Malaria was eliminated from Sri Lanka in 2012, and the country received WHO-certification in 2016.

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The first introduced malaria case reported from Sri Lanka after elimination: implications for preventing the re-introduction of malaria in recently eliminated countries

July 1, 2019 - 15:28 -- Open Access
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Author(s): 
Vissundara M. Karunasena, Manonath Marasinghe, Dewanee Ranaweera, et al.
Reference: 
Malaria Journal 2019 18:210, 24 June 2019

There has been no local transmission of malaria in Sri Lanka for 6 years following elimination of the disease in 2012. Malaria vectors are prevalent in parts of the country, and imported malaria cases continue to be reported. The country is therefore at risk of malaria being re-established. The first case of introduced vivax malaria in the country is reported here, and the surveillance and response system that contained the further spread of this infection is described.

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Susceptibility to common insecticides and detoxifying enzyme activities in Anopheles sundaicus (sensu lato) after cessation of indoor residual spraying of insecticides in the Jaffna Peninsula and its surroundings in northern Sri Lanka

January 26, 2019 - 08:16 -- Open Access
Author(s): 
Kokila Sivabalakrishnan, Thilini C. Weerarathne, Amirtharasa Thileepan, S. H. P. Parakrama Karunaratne, Ranjan Ramasamy and Sinnathamby N. Surendran
Reference: 
Parasites & Vectors 2019 12:13

The present study investigated the insecticide susceptibility levels and resistance mechanisms of Anopheles sundaicus (sensu lato) (previously classified as Anopheles subpictus species B) an important malaria vector in the Jaffna Peninsula and it surroundings in northern Sri Lanka after indoor residual spraying of insecticides was terminated in 2013.

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Host genetic polymorphisms and serological response against malaria in a selected population in Sri Lanka

January 2, 2019 - 15:16 -- Open Access
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Author(s): 
Rajika L. Dewasurendra, Anna Jeffreys, Sharmini A. Gunawardena, Naduviladath V. Chandrasekharan, Kirk Rockett, Dominic Kwiatkowski and Nadira D. Karunaweera
Reference: 
Malaria Journal 2018 17:473, 17 December 2018

The study suggests that several SNPs in the human genome that exist in Sri Lankan populations are significantly associated with anti-malarial antibodies, either with generation and/or maintenance of antibodies for longer periods, which can be due to either individual polymorphisms or most probably a combined effect of the markers.

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Genetic diversity and population structure of malaria vector mosquitoes Anopheles subpictus, Anopheles peditaeniatus, and Anopheles vagus in five districts of Sri Lanka

July 24, 2018 - 15:20 -- Open Access
Author(s): 
Thilini C. Weeraratne, Sinnathambi N. Surendran, Catherine Walton and S. H. P. Parakrama Karunaratne
Reference: 
Malaria Journal 2018 17:271, 20 July 2018

Gene flow among the populations of An. peditaeniatus, An. vagus and An. subpictus species A was evident.

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Genotype and biotype of invasive Anopheles stephensi in Mannar Island of Sri Lanka

May 30, 2018 - 07:38 -- Open Access
Author(s): 
Sinnathamby N. Surendran, Kokila Sivabalakrishnan, Ranjan Ramasamy, et al.
Reference: 
Parasites & Vectors (2018) 11:3

The present study provides a more detailed molecular characterization of An. stephensiand suggests the presence of the type-form of the vector for the first time in Sri Lanka. The single mutation in the cox1 gene may be indicative of a founder effect causing the initial diversification of An. stephensi in Sri Lanka from the Indian form. 

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Analysis of Historical Trends and Recent Elimination of Malaria from Sri Lanka and Its Applicability for Malaria Control in Other Countries

October 17, 2017 - 12:38 -- Open Access
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Author(s): 
Dilkushi Anula Wijesundere, Ranjan Ramasamy
Reference: 
Front. Public Health, 28 August 2017

Sri Lanka is a tropical island located South of India in the Indian Ocean.

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First record of Anopheles stephensi in Sri Lanka: a potential challenge for prevention of malaria reintroduction

August 14, 2017 - 15:26 -- Open Access
Author(s): 
A. G. Gayan Dharmasiri, A. Yashan Perera, Jeevanie Harishchandra, Hemantha Herath, Kandasamy Aravindan, H. T. R. Jayasooriya, Gaya R. Ranawaka and Mihirini Hewavitharane
Reference: 
Malaria Journal 2017 16:326, 10 August 2017

Sri Lanka was certified as malaria-free by the WHO in September 2016, however, this new finding may pose a serious challenge to the efforts of the Ministry of Health to prevent the re-introduction of malaria transmission in the country, considering the role that An. stephensi could play in urban and high vulnerability areas of Sri Lanka.

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Diagnostic challenges and case management of the first imported case of Plasmodium knowlesi in Sri Lanka

March 28, 2017 - 15:15 -- Open Access
Author(s): 
A. Dewanee Ranaweera, Manjula N. Danansuriya, Deepika Fernando, et al.
Reference: 
Malaria Journal 2017 16:126, 21 March 2017

Plasmodium knowlesi should be suspected in patients returning from countries in the South Asian region where the parasite is prevalent and when blood smear results are inconclusive.

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Should chemoprophylaxis be a main strategy for preventing re-introduction of malaria in highly receptive areas? Sri Lanka a case in point

March 9, 2017 - 15:52 -- Open Access
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Author(s): 
A. Rajitha Wickremasinghe, Renu Wickremasinghe, Hemantha D. B. Herath and S. Deepika Fernando
Reference: 
Malaria Journal 2017 16:102, 4 March 2017

Based on the low risk of acquiring malaria among Sri Lankan travellers returning from India and the high receptivity in previously malarious areas of the country, chemoprophylaxis should not be considered a major strategy in the prevention of re-introduction.

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