Browsing by Author "Mohamed Paid Yusof"
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- PublicationCluster of COVID-19 Cases in a Workplace: the First Cluster of a Workplace-related Outbreak in Malaysia, 2020(2022)
;Noor Aliza Lodz ;Chong Zhuo Lin ;Wan Shakira Rodzlan Hasani ;Noor Ani Ahmad ;Fazila Haryati Ahmad ;Halizah Mat Rifin ;Shubash Shander Ganapathy ;Nur Liana Ab Majid ;Nik Adilah Shahein ;Muhd Hafizuddin Taufik Ramli ;Zazarida Zakiman ;Salina Md Talib ;Lee Soo Cheng ;Rama Krishna Supramaniam ;Muhammad Haikal GhazaliMohamed Paid YusofIn the early stages of the COVID-19 crisis, there was no specific guideline for handling an outbreak if it occurred in a workplace. This study aimed to describe the first and one of the largest clusters linked to a business corporate in Malaysia. A descriptive analysis was conducted using surveillance data from the Petaling District Health Office notified between 28 Feb and 22 Mar 2020. All cases and contacts were identified through surveillance, epidemiological investigation, and laboratory investigation. The total number of confirmed cases and close contacts were 63 and 1,536, respectively. The respondents were mainly Malay, male, and the mean age was 46 years. Of the 63 positive cases, 48 (76%) were reported to have symptoms during the investigation, while the remaining 15 cases (24%) were asymptomatic. The main clinical manifestations were fever (52%), cough (37%), sore throat (27%) and shortness of breath (27%). The mean incubation period was 3.5 days. Due to the timely prevention and control measures carried out by the Petaling District Health Office, the chain of transmission was interrupted as the last case was reported on 19 Mar 2020. - PublicationFactors Associated with Asymptomatic COVID-19 Patients in Petaling District, Selangor, Malaysia(2021)
;Lim Kuang Kuay ;Ainul Nadziha Mohd Hanafiah ;Lee Soo Cheng ;Chan Ying Ying ;Mohd Shaiful Azlan Kassim ;Chong Zhuo Lin ;Roslinda Abu Sapian ;Nurul Syarbani Eliana Musa ;Ridwan SanaudiMohamed Paid YusofIntroduction: The rapid spread of the Coronavirus disease 2019 (COVID-19) worldwide has led the World Health Organization to declare COVID-19 outbreak as a pandemic on March 11, 2020. As the local studies on factors leading to the absence or presence of clinical illness among the COVID-19 cases are sparse, the study aims to determine the factors associated with asymptomatic COVID 19 patients in Petaling District, Selangor, Malaysia. Methods: Data on COVID-19 patients were extracted from the database of confirmed cases in Petaling District Health Office, Selangor, Malaysia from 3rd February 2020 to 30th April 2020. An asymptomatic laboratory-confirmed case is a person infected with COVID-19 who does not develop any symptoms. The study included socio-demographic variables, the detailed information on clinical manifestations and co-morbidity of the patients. Descriptive and multiple logistic regression analyses were conducted to determine the factors associated with asymptomatic patients. Results: The overall COVID-19 patients in Petaling District were 434. Approximately 70% (n= 292) of the patients were symptomatic while 32.7% (n= 142) were asymptomatic. Multivple logistic regression analyses revealed that factors significantly associated with asymptomatic patients were age below 40 years old (aOR: 1.79, 95% CI 1.11, 2.86), non-Malaysians (aOR: 3.22, 95% CI 1.44, 7.19) and local cases (aOR: 2.51, 95% CI 1.42, 4.42). Gender, ethnicity, co morbidity and township were not significantly associated with asymptomatic patients. Conclusions: Approximately one-third of COVID-19 patients were asymptomatic and the risk factors identified were younger age, non-Malaysians and local cases. Rigorous epidemiological investigation is helpful in identifying COVID-19 cases among these group of people who are asymptomatic.