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. 2020 Jan 31;19(1):55.
doi: 10.1186/s12936-020-3135-x.

Updates on malaria incidence and profile in Malaysia from 2013 to 2017

Narwani Hussin  1 , Yvonne Ai-Lian Lim  2 , Pik Pin Goh  3 , Timothy William  4 , Jenarun Jelip  5 , Rose Nani Mudin  6
Affiliations

Updates on malaria incidence and profile in Malaysia from 2013 to 2017

Narwani Hussin et al. Malar J. .

Abstract

Background: To date, most of the recent publications on malaria in Malaysia were conducted in Sabah, East Malaysia focusing on the emergence of Plasmodium knowlesi. This analysis aims to describe the incidence, mortality and case fatality rate of malaria caused by all Plasmodium species between Peninsular Malaysia and East Malaysia (Sabah and Sarawak) over a 5-year period (2013-2017).

Methods: This is a secondary data review of all diagnosed and reported malaria confirmed cases notified to the Ministry of Health, Malaysia between January 2013 and December 2017.

Results: From 2013 to 2017, a total of 16,500 malaria cases were notified in Malaysia. The cases were mainly contributed from Sabah (7150; 43.3%) and Sarawak (5684; 34.4%). Majority of the patients were male (13,552; 82.1%). The most common age group in Peninsular Malaysia was 20 to 29 years (1286; 35.1%), while Sabah and Sarawak reported highest number of malaria cases in age group of 30 to 39 years (2776; 21.6%). The top two races with malaria in Sabah and Sarawak were Bumiputera Sabah (5613; 43.7%) and Bumiputera Sarawak (4512; 35.1%), whereas other ethnic group (1232; 33.6%) and Malays (1025; 28.0%) were the two most common races in Peninsular Malaysia. Plasmodium knowlesi was the commonest species in Sabah and Sarawak (9902; 77.1%), while there were more Plasmodium vivax cases (1548; 42.2%) in Peninsular Malaysia. The overall average incidence rate, mortality rate and case fatality rates for malaria from 2013 to 2017 in Malaysia were 0.106/1000, 0.030/100,000 and 0.27%, respectively. Sarawak reported the highest average incidence rate of 0.420/1000 population followed by Sabah (0.383/1000). Other states in Peninsular Malaysia reported below the national average incidence rate with less than 0.100/1000.

Conclusions: There were different trends and characteristics of notified malaria cases in Peninsular Malaysia and Sabah and Sarawak. They provide useful information to modify current prevention and control measures so that they are customised to the peculiarities of disease patterns in the two regions in order to successfully achieve the pre-elimination of human-only species in the near future.

Keywords: Case fatality rate; Incidence; Malaria; Mortality; Peninsular Malaysia; Sabah and Sarawak.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Number of malaria cases according to year and Plasmodium species in Sabah and Sarawak from 2013 to 2017 (top). Number of malaria cases according to year and Plasmodium species in Peninsular Malaysia from 2013 to 2017 (bottom)
Fig. 2
Fig. 2
Incidence rate (IR)/1000 of malaria cases in Peninsular Malaysia, Sabah and Sarawak and whole Malaysia from 2013 to 2017
Fig. 3
Fig. 3
Number of malaria deaths and mortality rate (MR) in Sabah and Sarawak from 2013 to 2017 (top). Number of malaria deaths and mortality rate (MR) in Peninsular Malaysia from 2013 to 2017 (centre). Number of malaria deaths and mortality rate (MR) in Malaysia from 2013 to 2017 (bottom)
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