1.Treating hepatitis C in HIV/HCV co-infected patients in Malaysia- the outcomes and challenges
Soek Siam Tan ; Chee Loon Leong ; Christopher Kwok Chong Lee
The Medical Journal of Malaysia 2015;70(5):281-287
Background: Co-infection by human immunodeficiency and
hepatitis C viruses (HIV/HCV) is common and results in
significant morbidity and mortality despite effective antiretroviral
therapies (ART).
Method: A retrospective and prospective evaluation of the
efficacy and safety of pegylated interferon alfa 2a/2b plus
ribavirin (PEG-IFN/RBV) in consecutive HIV/HCV co-infected
patients treated in real life clinical practice in Malaysia.
Results: Forty-five HIV/HCV co-infected patients with a
median age (interquartile range, IQR) of 41 years (37; 47)
were assessed for treatment with PEG-IFN/RBV. All except
one are of male gender and the most common risk behaviour
was injecting drug use. At baseline 75.5% was on ART and
the median (IQR) CD4 count was 492 cells/µl (376; 621). The
HCV genotypes (GT) were 73 % GT3 and 27% GT1. Liver
biopsies in forty patients showed 10% had liver cirrhosis
and another 50% had significant liver fibrosis. The treatment
completion rate was 79.5% with 15.9% dropped out of
treatment due to adverse effects (AE) or default and 4.6%
due to lack of early virological response. The AE causing
premature discontinuations were neuropsychiatric and
haematological. The overall sustained virological response
(SVR) was 63.6% with a trend towards higher SVR in GT3
compared with GT1 (71.9% vs. 41.7%; p=0.064). In patients
with bridging fibrosis plus occasional nodules or cirrhosis
on liver biopsy, the SVR was significantly lower at 20%
(p=0.030) compared to those with milder fibrosis.
Conclusion: HIV/HCV co-infected patients can be
successfully and safely treated with PEG-IFN/RBV achieving
high rates of SVR except in cirrhotic patients.
HIV
;
Hepacivirus
2.Citrobacter Koseri Bacteraemia Complicated by Paraspinal Abscess and Spondylodiscitis - A Case Report
Nor Hayati Shaharuddin ; Chee Loon Leong ; Suresh Kumar Chidambaram ; Christopher Lee
The Medical Journal of Malaysia 2012;67(3):337-339
Paraspinal abscess and spondylodiscitis due to Citrobacter
koseri is a very rare condition. We report a remarkable case of Citrobacter koseri bacteraemia complicated by paraspinal abscess and spondylodiscitis in a patient who has successfully been treated in our hospital. Our patient
demonstrates one of the common challenges in the practice
of infectious disease medicine, wherein an innocuous
presentation may and often underlie a serious infection. This case report elucidates to us that the diagnosis of a paraspinal abscess and spondylodiscitis requires a high index of suspicion in at risk patient presenting with compatible signs and symptoms.
3.Community-acquired necrotising pneumonia caused by Panton-Valentine leucocidin-producing methicillinresistant Staphylococcus aureus
Chee Loon LEONG ; Norazah AHMAD ; Azureen AZMEL ; Rakesh LINGAM
The Medical Journal of Malaysia 2017;72(6):378-379
A 61-year-old male presented with community-onsetpneumonia not responding to treatment despite givenappropriate antibiotics. Computed tomography scan of thethorax showed large multiloculated pleural effusion withmultiple cavitating foci within collapsed segments; lesionswhich were suggestive of necrotising pneumonia. Drainageof the effusion and culture revealed methicillin-resistantStaphylococcus aureus, which had the same antibioticprofile with the blood isolate and PVL gene positive.
4.Understanding the super-spreading events of SARS in Singapore.
Mark I C CHEN ; Seng-Chee LOON ; Hoe-Nam LEONG ; Yee-Sin LEO
Annals of the Academy of Medicine, Singapore 2006;35(6):390-394
INTRODUCTIONIt has been noted that SARS transmission is characterised by a few super-spreading events (SSEs) giving rise to a disproportionate number of secondary cases. Clinical and environmental features surrounding the index cases involved were compared with cases in non- SSEs.
MATERIALS AND METHODSData on 231 cases of probable SARS admitted to Tan Tock Seng Hospital (TTSH) were used. Index cases directly causing 10 or more secondary cases were classified as having been involved in SSEs; all others were defined as non-SSEs.
RESULTSOnly 5 cases were involved in SSEs; all 5 were isolated on day 5 of illness or later, and spent at least a brief period in a non-isolation ward; in contrast, amongst the 226 non-SSE cases, only 40.7% and 4.0% were isolated late and admitted to non-isolation wards respectively, and only 3.1% had both these environmental features present; the differences were highly significant (P = 0.012, P <0.001 and P <0.001 by Fisher's Exact test). When compared to 7 non-SSE cases with delayed isolation and an admission to non-isolation wards, SSEs were more likely to have co-morbid disease or require ICU care at time of isolation (P = 0.045 for both factors).
CONCLUSIONSSEs were likely due to a conglomeration of environmental factors of delayed isolation and admission to a non-isolation ward, coupled with severe disease stage at time of isolation.
Adult ; Female ; Humans ; Male ; Middle Aged ; Severe Acute Respiratory Syndrome ; epidemiology ; transmission ; Singapore ; epidemiology
5.Hydroxychloroquine for COVID-19: A Single Center, Retrospective Cohort Study
Wen Chung Ho ; Wei Xin Yong ; Khai Shin Tan ; Woh Yon Mak ; Mandeep Kaur Gill ; Agnes Hui Ching Lok ; Shazwani Zulkifli ; Salmah Idris ; Khairil Erwan Khalid ; Chee Loon Leong ; Kang Nien How
Malaysian Journal of Medicine and Health Sciences 2023;19(No.2):8-13
Introduction: The outbreak of coronavirus disease (COVID-19) in December 2019 called for a rapid solution, leading to repurposing of existing drugs. Due to its immunomodulatory effect and antiviral properties, hydroxychloroquine (HCQ) has been used in early 2020 for treatment of COVID-19 patients. This study was conducted to evaluate
the treatment outcome of HCQ monotherapy in Malaysia. Methods: A retrospective cohort study was conducted in
COVID-19 ward in Hospital Kuala Lumpur (HKL), from March to April 2020. A total of 446 COVID-19 patients were
recruited, only 325 patients were finally included for analysis. Statistical analysis was done using SPSS, with a significant value set at p<0.05. Results: The mean age of the patients were 38.5 ±15.5. They were majority male, (n=210,
64.6%) Malaysian (n=239, 73.5%) and Malay ethnicity (n=204, 62.8%). Ninety-one (28%) patients received HCQ
monotherapy. HCQ monotherapy was associated with worse outcome (OR: 10.29, 95% CI 1.17-90.80). There was a
significant difference in mean length of stay between those with and without HCQ treatment (t323=5.868, p<0.001,
95% CI, 2.56-5.31). The average length of stay for HCQ treated group was 3.84 days longer than those without
treatment. 6.6% of the patient receiving HCQ monotherapy encountered adverse drug effects. Conclusion: Similar
to study reported worldwide, our study demonstrated that HCQ did not improve length of stay and the outcome of
COVID-19 patients.
6.Clinical Characteristics and Risk Factors of CarbapenemResistant Enterobacteriaceae: A Case-Control Study in a Tertiary Hospital in Malaysia
Ruzanna Dayanna Zawawi ; Ramliza Ramli ; Tg Mohd Ikhwan Tg Abu Bakar Sidik ; Isa Naina-Mohamed ; Leong Chee Loon
Malaysian Journal of Medicine and Health Sciences 2021;17(No.4):189-195
Introduction: Carbapenem-resistant Enterobacteriaceae (CRE) is increasingly reported worldwide causing serious
threats to healthcare. This study aimed to identify the common organisms associated with CRE, the clinical characteristics and risk factors for acquiring CRE infection and colonisation among hospitalised patients. Methods: This
is a matched, case-control study. Patients aged 18 years and above whom were hospitalised from January 2019 to
December 2019 and had CRE isolated from clinical specimens were matched with carbapenem-susceptible controls
(CSE), based on gender and age. Univariate and multivariate statistical analysis was performed. Results: Among 184
patients, Klebsiella pneumoniae was the most common organism causing CRE infection and colonisation. Chronic
kidney disease (p=0.025, OR:3.12, 95% CI:1.15-8.41), urinary catheterisation (p=0.005, OR:3.67, 95% CI:1.49-
9.00), prior use of cephalosporin (p<0.001, OR:4.69, 95% CI:1.96–11.22) and beta-lactam combination agent
(p<0.001, OR:7.18, 95% CI:2.98-17.26) were identified as the independent risk factors. Conclusion: Chronic kidney
disease, urinary catheterisation, prior use of cephalosporin and beta-lactam combination agents were independently
associated with CRE infection and colonisation. These findings enable targeting potential CRE cohorts, hence, necessitate early undertaking of prevention measures to delay the onset of CRE. A rigorous effort by antibiotic stewardship
an infection control team are pivotal.