• Peter Gan Kim Soon Kinta District Health Office, Ministry of Health Malaysia
  • Asraf Ahmad Qamruddin Manjung District Health Office, Ministry of Health Malaysia
  • Awanis Muhammad Sharif Kinta District Health Office, Ministry of Health Malaysia




presenting symptoms, epidemiology, Malaysia, COVID-19 infection


COVID-19 has overwhelmed the healthcare system and crippled the economic and social activities globally. This study aims to analyse the epidemiological and presenting symptoms of COVID-19 and understand the public health intervention. A retrospective review of COVID-19 confirmed cases registered in Kinta District, Malaysia between 14th March 2020 to 28th March 2021. Descriptive statistics were used to describe the cases, and the association between the 2nd and 3rd waves of infection was determined using Pearson's chi-squared tests or student t-tests. 3051 COVID- 19 confirmed cases were reported during the 2nd wave and 3rd wave. The characteristics associated with the 2nd and 3rd waves were age, ethnicity, nationality, and transmission location. Asymptomatic cases account for 67.3% and 66.0% during the 2nd and 3rd waves, respectively. Presenting symptoms such as fever with respiratory symptoms, respiratory symptoms only, ageusia or anosmia were associated with the transmissions. Diabetes mellitus, hypertension, chronic kidney disease and multimorbidity were significantly associated with the 2nd and 3rd waves. As most confirmed cases were asymptomatic, a coordinated and systematic approach to tracing, testing, and isolating close contacts is critical to managing the pandemic. It highlights the importance of the public health experience in providing a comprehensive and integrated response to managing the COVID-19 pandemic.


Wang F, Cao J, Yu Y, Ding J, Eshak ES, Liu K, et al. Epidemiological characteristics of patients with severe COVID-19 infection in Wuhan, China: evidence from a retrospective observational study. International journal of epidemiology. 2020;49(6):1940-50.

World Health Organization. Statement on the second meeting of the International Health Regulations (2005) Emergency Committee regarding the outbreak of novel coronavirus (2019-nCoV) 2020 [Available from: https://www.who.int/news/item/30-01-2020-statement-on-the-second-meeting-of-the-international-health-regulations-(2005)-emergency-committee-regarding-the-outbreak-of-novel-coronavirus-(2019-ncov).

World Health Organization. WHO Director-General's opening remarks at the media briefing on COVID-19-11th March 2020: Geneva, Switzerland; 2020 [Available from: https://www.who.int/director-general/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19---11-march-2020.

European Centre for Disease Prevention and Control. COVID-19 situation update worldwide, as of week 28, updated 22nd July 2021 2021 [Available from: https://www.ecdc.europa.eu/en/geographical-distribution-2019-ncov-cases.

Hamzah NM, Yu M-M, See KF. Assessing the efficiency of Malaysia health system in COVID-19 prevention and treatment response. Health Care Management Science. 2021:1-13.

Miller IF, Becker AD, Grenfell BT, Metcalf CJE. Disease and healthcare burden of COVID-19 in the United States. Nature Medicine. 2020;26(8):1212-7.

Ministry of Health Malaysia. COVID-19 (Latest Updates) 2020 [Available from: https://covid-19.moh.gov.my/.

Marzuki AA, Nor NNFM, Rashid SMRA. AGING POPULATION TREND IN THE STATE OF PERAK, MALAYSIA. Quantum Journal of Social Sciences and Humanities. 2021;2(5):1-9.

Ahmad S, Jones D. Investigating the mining heritage significance for Kinta District, the industrial heritage legacy of Malaysia. Procedia-Social and Behavioral Sciences. 2013;105:445-57.

Ministry of Health Malaysia. Case Definition of COVID-19 2021 [Available from: http://covid-19.moh.gov.my/garis-panduan/garis-panduan-kkm/ANNEX_1-Case_definition_11052021.pdf.

Ng CFS, Seposo XT, Moi ML, Tajudin MABA, Madaniyazi L, Sahani M. Characteristics of the COVID-19 epidemic and control measures to curb transmission in Malaysia. International Journal of Infectious Diseases. 2020;101:409-11.

Bernama. No fourth wave: Malaysia still handling the third wave of Covid-19 infections, says Dr Adham 2021 [Available from: https://www.thestar.com.my/news/nation/2021/04/17/no-fourth-wave-malaysia-still-handling-the-third-wave-of-covid-19-infections-says-dr-adham.

Furuse Y, Sando E, Tsuchiya N, Miyahara R, Yasuda I, Ko YK, et al. Clusters of coronavirus disease in communities, Japan, January–April 2020. Emerging infectious diseases. 2020;26(9):2176.

Kim H-J, Hwang H-S, Choi Y-H, Song H-Y, Park J-S, Yun C-Y, et al. The delay in confirming COVID-19 cases linked to a religious Group in Korea. Journal of Preventive Medicine and Public Health. 2020;53(3):164.

Yadav AK. Impact of lockdown to control over Novel Coronavirus and COVID-19 in India. Journal of Family Medicine and Primary Care. 2020;9(10):5142.

Onyeaka H, Anumudu CK, Al-Sharify ZT, Egele-Godswill E, Mbaegbu P. COVID-19 pandemic: A review of the global lockdown and its far-reaching effects. Science Progress. 2021;104(2):00368504211019854.

McCall B. Shut down and reboot—preparing to minimise infection in a post-COVID-19 era. The Lancet Digital Health. 2020;2(6):e293-e4.

Rawson T, Huntingford C, Bonsall MB. Temporary "circuit breaker" lockdowns could effectively delay a COVID-19 second wave infection peak to early spring. Frontiers in public health. 2020;8:899.

Ong S-Q, Ahmad H, Mohd Ngesom AM. Implications of the COVID-19 lockdown on dengue transmission in Malaysia. Infectious disease reports. 2021;13(1):148-60.

Jones N. How coronavirus lockdowns stopped flu in its tracks. Nature (Lond). 2020.

Nicolay N, Mirinaviciute G, Mollet T, Celentano LP, Bacci S. Epidemiology of measles during the COVID-19 pandemic, a description of the surveillance data, 29 EU/EEA countries and the United Kingdom, January to May 2020. Eurosurveillance. 2020;25(31):2001390.

Zamzuri MAIA, Ibrahim FE, Reffien MAM, Hanan MFM, Dasani MHM, Ali NKM, et al. Epidemiological Characteristics of COVID-19 in Seremban, Negeri Sembilan, Malaysia. Open Access Macedonian Journal of Medical Sciences. 2020;8(T1):471-5.

Ganapathy SS, Chong ZL, Rodzlan Hasani WS, Rifin HM, Ab Majid NL, Shahein NA, et al. Epidemiological and Clinical Characteristics of 1,375 Cases of COVID-19 in Selangor, Malaysia. 2020.

Guan W-j, Ni Z-y, Hu Y, Liang W-h, Ou C-q, He J-x, et al. Clinical characteristics of coronavirus disease 2019 in China. New England journal of medicine. 2020;382(18):1708-20.

Alshukry A, Ali H, Ali Y, Al-Taweel T, Abu-Farha M, AbuBaker J, et al. Clinical characteristics of coronavirus disease 2019 (COVID-19) patients in Kuwait. PLoS One. 2020;15(11):e0242768.

Surendra H, Elyazar IR, Djaafara BA, Ekawati LL, Saraswati K, Adrian V, et al. Clinical characteristics and mortality associated with COVID-19 in Jakarta, Indonesia: a hospital-based retrospective cohort study. The Lancet Regional Health-Western Pacific. 2021;9:100108.

Ivanov D. Predicting the impacts of epidemic outbreaks on global supply chains: A simulation-based analysis on the coronavirus outbreak (COVID-19/SARS-CoV-2) case. Transportation Research Part E: Logistics and Transportation Review. 2020;136:101922.

Kabir H, Maple M, Usher K. The impact of COVID-19 on Bangladeshi readymade garment (RMG) workers. Journal of Public Health. 2021;43(1):47-52.

Alene M, Yismaw L, Assemie MA, Ketema DB, Mengist B, Kassie B, et al. Magnitude of asymptomatic COVID-19 cases throughout the course of infection: A systematic review and meta-analysis. PloS one. 2021;16(3):e0249090.

Kronbichler A, Kresse D, Yoon S, Lee KH, Effenberger M, Shin JI. Asymptomatic patients as a source of COVID-19 infections: A systematic review and meta-analysis. International journal of infectious diseases. 2020;98:180-6.

Nogrady B. What the data say about asymptomatic COVID infections. Nature. 2020;587(7835):534-5.




How to Cite

Gan Kim Soon, P., Qamruddin, A. A., & Muhammad Sharif, A. (2022). LOOKING BACK AT A YEAR OF COVID-19 INFECTION IN KINTA DISTRICT, MALAYSIA: THE PUBLIC HEALTH EXPERIENCE TO SUPPRESS THE PANDEMIC. Malaysian Journal of Public Health Medicine, 22(1), 131–138. https://doi.org/10.37268/mjphm/vol.22/no.1/art.1441