Displaying publications 61 - 80 of 181 in total

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  1. Mohd Ali MR, Mohamad Safiee AW, Yusof NY, Fauzi MH, Yean Yean C, Ismail N
    J Infect Public Health, 2017 12 23;11(4):578-580.
    PMID: 29277333 DOI: 10.1016/j.jiph.2017.12.008
    BACKGROUND: Environmental sampling provides important information that enhances the understanding of the leptospiral human-environment-animal relationship. Several studies have described the distribution of Leptospira in the environment. However, more targeted sites, that is, areas surrounding leptospirosis patients' houses, remain under-explored. Therefore, this study aims to detect the presence of Leptospira spp. in the residential areas of patients with leptospirosis.

    METHODS: Soil and water samples near leptospirosis patients' residences were collected, processed and cultured into EMJH media. Partial 16S rRNA gene sequencing was performed to confirm the identity of Leptospira.

    RESULTS: EMJH culture and partial 16S rRNA gene sequencing revealed predominant growth of pathogenic Leptospira kmetyi (17%, n=7/42). All tested locations had at least one Leptospira sp., mostly from the soil samples.

    CONCLUSION: More than one species of Leptospira may be present in a sampling area. The most common environmental isolates were pathogenic L. kmetyi.

    Matched MeSH terms: Leptospirosis/microbiology*; Leptospirosis/epidemiology*
  2. Rao M, Atiqah N, Dasiman M, Amran F
    J Med Microbiol, 2020 Mar;69(3):451-456.
    PMID: 31846413 DOI: 10.1099/jmm.0.001127
    Introduction. Co-infection of leptospirosis-malaria is not uncommon due to their overlapping geographical distribution in the tropics.Aim. This study aimed to describe and compare the demographic, clinical and laboratory features of leptospirosis-malaria co-infection (LMCI) against leptospirosis mono-infection (LMI) in Peninsular Malaysia.Methodology. Data of patients admitted to various hospitals in Peninsular Malaysia from 2011 to 2014 diagnosed with leptospirosis in our laboratory were obtained from their admission records. Co-infections with malaria were identified via blood film for malaria parasites (BFMP). Description with inferential statistics analysis and multiple logistic regressions were used to distinguish features between dual and mono-infections.Results. Of 111 leptospirosis-positive patients, 26 (23.4 %) tested positive for malaria. Co-infections were predominant among male patients with a mean age of 33 years and were prevalent among immigrant populations who had settled in high-density suburban areas. Chills and rigor with splenomegaly were the only significant distinguishing clinical features of LMCI while leukocytosis and raised transaminases were significant laboratory parameters. Only chills and rigor demonstrated a predictive value for LMCI from analysis of multiple logistic regressions. No death was attributed to co-infection in this study, in contrast to LMI (11.8 %, n=10).Conclusion. The significant prevalence of LMCI found in this study with overlapping demographic, clinical and laboratory parameters makes diagnosis of co-infection challenging. It is essential to evaluate co-infection in endemic areas. Strengthened awareness of LMCI, comprehensive diagnostic services and further prospective studies are warranted.
    Matched MeSH terms: Leptospirosis/diagnosis; Leptospirosis/microbiology; Leptospirosis/epidemiology*
  3. Benacer D, Mohd Zain SN, Ahmed AA, Mohd Khalid MKN, Hartskeerl RA, Thong KL
    J Med Microbiol, 2016 Jun;65(6):574-577.
    PMID: 27058766 DOI: 10.1099/jmm.0.000262
    Matched MeSH terms: Leptospirosis/microbiology; Leptospirosis/epidemiology; Leptospirosis/veterinary*
  4. Azfar ZM, Nazri SM, Rusli AM, Maizurah O, Zahiruddin WM, Azwany YN, et al.
    J Prev Med Hyg, 2018 Mar;59(1):E92-E98.
    PMID: 29938244 DOI: 10.15167/2421-4248/jpmh2018.59.1.776
    INTRODUCTION: Many efforts have been done to reduce leptospirosis infections in Malaysia especially among high risk groups including town service workers. Town service workers are more likely to be exposed to the leptospiral infection resulting from their occupational activities.

    METHODS: A cross sectional study was conducted in northeastern Malaysia involving 321 town service workers who were subjected to answer an interviewer-guided validated questionnaire which consists of sociodemographic, knowledge, attitude and practice information. Data were entered and analyzed using SPSS Version 20.

    RESULTS: All of the respondents were Malay with mean (SD) age of 40.6 (10.28) years old. The mean (SD) duration of employment was 12.1 (9.62) years. Fifty four respondents (16.8%) had never heard of leptospirosis. Among the respondents, 215 (67.0%) of them had poor knowledge on leptospirosis. Meanwhile, 167 (52.0%) and only 128 (39.9%) of them had satisfactory attitude and practice respectively. It was found that knowledge on risk factors for leptospirosis was lacking. There were high risk attitudes such as drinking habit and protective equipment used during working with the favourable answers ranged from 67.3% to 89.1%. The weakest area identified in their practice was also on the use of protective equipment.

    CONCLUSIONS: The workers' level of knowledge and practice were relatively poor despite an overall good practice on leptospirosis. This finding might expose them to an increased risk of contracting leptospirosis. Identified weak areas in their knowledge, attitude and practice will assist the policy makers to develop a focused and well-directed intervention program on leptospirosis infection.

    Matched MeSH terms: Leptospirosis/prevention & control*
  5. Azali MA, Yean Yean C, Harun A, Aminuddin Baki NN, Ismail N
    J Trop Med, 2016;2016:2060241.
    PMID: 27127522 DOI: 10.1155/2016/2060241
    The presence of pathogenic Leptospira spp. in the environment poses threats to human health. The aim of this study was to detect and characterize Leptospira spp. from environmental samples. A total of 144 samples comprised of 72 soil and 72 water samples were collected from markets and recreational areas in a north-eastern state in Malaysia. Samples were cultured on Ellinghausen and McCullough modified by Johnson and Harris media. Leptospires were positive in 22.9% (n = 33) of the isolates. Based on partial sequences of 16S rRNA, a pathogenic leptospire, Leptospira alstonii (n = 1/33), was identified in 3% of the isolates followed by intermediate leptospire (L. wolffii, n = 1/33, and L. licerasiae, n = 7/33) and nonpathogenic leptospire, L. meyeri (n = 22/33) in 24.2% and 66.7%, respectively. This study demonstrates the presence of a clinically significant pathogenic L. alstonii in the environments which could pose health risks to the occupants and visitors.
    Matched MeSH terms: Leptospirosis
  6. Pui CF, Bilung LM, Apun K, Su'ut L
    J Trop Med, 2017;2017:3760674.
    PMID: 28348601 DOI: 10.1155/2017/3760674
    Various prevalence studies on Leptospira in animals and humans, as well as environmental samples, had been conducted worldwide, including Malaysia. However, limited studies have been documented on the presence of pathogenic, intermediate, and saprophytic Leptospira in selected animals and environments. This study was therefore conducted to detect Leptospira spp. in rats, soil, and water from urban areas of Sarawak using the polymerase chain reaction (PCR) method. A total of 107 rats, 292 soil samples, and 324 water samples were collected from April 2014 to February 2015. Pathogenic Leptospira was present in 5.6% (6/107) of rats, 11.6% (34/292) of soil samples, and 1.9% (6/324) of water samples. Intermediate Leptospira was present in 2.7% (8/292) of soil samples and 1.9% (6/324) of water samples. Saprophytic Leptospira was present in 10.3% (11/107) of rats, 1.4% (4/292) of soil samples, and 0.3% (1/324) of water samples. From this study, 76 Leptospira spp. were isolated. Based on DNA sequencing, the dominant Leptospira spp. circulating in urban areas of Sarawak are pathogenic Leptospira noguchii, intermediate Leptospira wolffii serovar Khorat, and saprophytic Leptospira meyeri, respectively. Overall, this study provided important surveillance data on the prevalence of Leptospira spp. from rats and the environment, with dominant local serovars in urban areas of Sarawak.
    Matched MeSH terms: Leptospirosis
  7. Othman N, Intan HI, Yip CW, Alias M, Amran F
    J Trop Pediatr, 2007 Feb;53(1):55-8.
    PMID: 17237115
    We report a case of an 8-year-old aborigine boy referred to our hospital for respiratory insufficiency with skin eruptions over the trunk and limbs. The skin condition was diagnosed as acquired ichthyosis. He also had a non-bleeding form of disseminated intravascular coagulopathy. Radiograph of the lungs showed bilateral perihilar opacities with bilateral pleural effusion. The diagnosis of leptospirosis was confirmed by a 4-fold rise in microagglutinating titre and polymerase chain reaction assay.
    Matched MeSH terms: Leptospirosis/diagnosis*; Leptospirosis/drug therapy
  8. Sabri Abdul Rahman M, Khairani Bejo S, Zakaria Z, Hassan L, Azri Roslan M
    J Vet Res, 2021 Mar;65(1):53-58.
    PMID: 33817395 DOI: 10.2478/jvetres-2021-0003
    Introduction: Leptospirosis is a bacterial disease that affects both humans and animals, the occurrence of which increases markedly during and after heavy rainfall and flooding. The aim of this study was to determine the serological prevalence of leptospiral infection in livestock after a voluminous flood in 10 districts of the Malaysian state of Kelantan.

    Material and Methods: In December 2014, Kelantan was hit by an extensive flood. A total of 1,728 serum samples were collected from livestock from the state, comprised of 1,024 from cattle, 366 from goats and 338 from sheep, and they were tested using the microscopic agglutination test (MAT).

    Results: Altogether, 203 (11.75%; 203/1728; 95% CI: 10.20%-13.30%) of the tested sera were found to be positive serologically. Cattle had the highest prevalence of 14.16% (145/1024), while goats and sheep had 11.20% (41/366) and 5.03% (17/338) respectively. The most frequent serovars detected were Hardjo-bovis (3.70%; 64/1728), Hebdomadis (2.08%; 36/1728) and Pomona (1.04%; 18/1728). There was a statistically significant association (P < 0.05) between livestock that were exposed to the flood and seropositivity.

    Conclusion: This study showed that flood is a risk factor that can play a role in the epidemiology of leptospiral infection in livestock.

    Matched MeSH terms: Leptospirosis
  9. Goh, S.H., Khor, K.H., Lau, S.F., Ismail, R., Khairani-Bejo, S., Radzi, R.
    Jurnal Veterinar Malaysia, 2019;31(1):17-27.
    MyJurnal
    Dogs could be reservoirs and carriers of Leptospira spp., hence, may play a potential role in disease transmission, exposing dog handlers to leptospirosis. This study evaluated the dog handlers’ knowledge, attitude and practice (KAP) towards leptospirosis. Four working dog and four dog shelter organisations were approached. A total of 138 dog handlers were conveniently recruited and evaluated on their level of knowledge, attitude and practice towards leptospirosis using a validated structured questionnaire. Most of the dog handlers were male aged between 30 and 40 years with a wide range of working experience of 1 - 10 years and all of them have no formal training about leptospirosis. The majority of the dog handlers from the dog shelters had poor knowledge (90%, n=34/38) and attitude (100%, n=38/38) and moderate practice (53%, n=20/38) towards leptospirosis, whereas the working dog handlers had poor knowledge (58%, n=58/100) and attitude (75%, n=75/100) but a good level of practice (77%, n=77/100). The poor attitude towards leptospirosis in both groups is alarming as it may hinder implementation plans of control and preventive measures. Although there was good hand-washing practices among the dog handlers, there was a lack of personal protective equipment (PPE) practice that may therefore expose both the dogs and dog handlers to leptospirosis. Information gained from this study could be used to implement intervention programmes and to suggest prevention measures to limit the risk of leptospirosis among the dog handlers.
    Matched MeSH terms: Leptospirosis
  10. Siti-Nurdyana, A.K., Bahaman, A.R., Sharma, R.S.K., Azlan, C.M., Abdul Razak, M.F.A.
    Jurnal Veterinar Malaysia, 2016;28(2):1-3.
    MyJurnal
    Leptospirosis is recognised as one of the leading zoonotic diseases and rodents have been implicated as one of the natural reservoirs of the disease. The Malayan porcupines (Hystrix brachyura) which are also a rodent could possibly be a carrier of leptospiral organisms. This study was conducted to determine the serological prevalence of leptospiral infection among captive Malayan porcupines and to disclose the possibility of porcupines as a reservoir for leptospiral infection. Fifty serum samples were obtained from the Malayan porcupines kept in captivity at the Wildlife Conservation Centre, Sungai Dusun, Malaysia. The microscopic agglutination test (MAT) was performed on the serum samples to detect the presence of agglutinating antibodies to a panel of 16 Leptospira serovars (Australis, Autumnalis, Ballum, Bataviae, Canicola, Celledoni, Djasiman, Hardjobovis, Hardjopratjino, Hebdomadis, Hurstbridge, Icterohaemorrhagiae, Javanica, Pomona, Pyrogenes and Sejroe). From the serological test, 18% (n=9/50) of the Malayan porcupines tested had leptospiral antibodies to serovars Javanica (8%), Hurstbridge (4%), Ballum (2%), Celledoni (2%) and Hardjoprajitno (2%). It is seen that this study disclosed a high prevalence of leptospiral infection in the Malayan porcupines tested and indicated that the Malayan porcupines could possibly be a source of leptospirosis to other animals including humans and that they might play an important role in the epidemiology of leptospiral infection in the country.
    Matched MeSH terms: Leptospirosis
  11. Bahaman, A.R., Fuzina, N.H., Tengku-Azmi, T.I., Tyagita, G.H., Jasni, S.
    Jurnal Veterinar Malaysia, 2018;30(1):7-14.
    MyJurnal
    Fifteen (15) guinea pigs were experimentally infected with Leptospira icterohemorrhagiae serovar Lai strain
    Langkawi, a new strain that was isolated from a human leptospirosis patient. Hematoxylin and Eosin ((H&E) staining
    showed haemorrhages, congestion and oedema in all internal organs examined (lungs, liver, spleen and kidneys) with
    inflammatory cell infiltration characterized by neutrophils, lymphocytes and macrophages. Hydropic degeneration and
    cell necrosis were also common in our findings. Leptospires were detected starting Day 2 p.i by silver staining and
    Transmission Electron Microscopy (TEM). Rise in antibody titres started on Day 5 p.i and leptospiral DNA was
    detected beginning Day 3 in the kidneys and Day 5 in the liver by Polymerase Chain Reaction (PCR) assay. The
    findings illustrated the pathogenesis of leptospirosis in guinea pigs which disclosed them as a suitable animal model for
    demonstration of clinical symptoms of leptospirosis and pathological changes after being infected with Leptospira
    icterohaemorrhagiae serovar Lai strain Langkawi, particularly pulmonary haemorrhages, a leading cause of mortality
    in human leptospirosis.
    Matched MeSH terms: Leptospirosis
  12. Sakamoto M, Sagara H, Koizumi N, Watanabe H
    Kansenshogaku Zasshi, 2001 Dec;75(12):1057-61.
    PMID: 11806141
    We report a case of leptospirosis infected in Sabah, Borneo island, Malaysia. The case is 25-year-old male who had participated in the EcoChallenge Sabah 2000 Expedition Race, a multisport event held during August 20 to September 3, 2000 at various sites in Sabah in Malaysian Borneo. He developed a high fever and headache on September 7, and he was admitted to our hospital on September 9. On admission he also had conjunctivitis and myalgias. Laboratory findings on admission revealed leukocytosis with left shift, slightly elevated transaminase levels, high CRP levels and proteinuria. Plasmodium spp. were negative on blood smears, and no bacteria were isolated from blood and feces cultures. We performed the laboratory tests for leptospirosis, based on the information about the probable leptospirosis outbreak among athletes who participated in the EcoChallenge Race, however both Leptospira antigens and antibodies were negative at that time. We diagnosed leptospirosis clinically because he manifested persistent symptoms, and minocycline 100 mg b.i.d. was administered intravenously resulting in excellent efficacy. Serum antibody tests by microscopic agglutination test (MAT) at convalescent stage revealed significant increased antibodies against Leptospira interrogans serovar hebdomadis, and the diagnosis of leptospirosis was confirmed. Infectious diseases have been global and it is important to have information concerning worldwide infectious disease situations as much as possible for accurate diagnosis.
    Matched MeSH terms: Leptospirosis/diagnosis; Leptospirosis/etiology*
  13. Dhunputh P, Acharya R, Umakanth S, Shetty SM, Mohammed AP, Saraswat PP
    Kathmandu Univ Med J (KUMJ), 2021 11 26;19(74):248-252.
    PMID: 34819445
    Background Thrombocytopenia is a common haematological abnormality noted in clinical practice, however, it can be missed in cases where specific investigations are not asked for. Acute Febrile Illness with thrombocytopenia is a diagnostic and therapeutic challenge, as thrombocytopenia has an inverse relation to mortality and morbidity in various febrile illnesses. Vector-borne and zoonotic diseases (like malaria, dengue, scrub typhus, and leptospirosis), infections and sepsis are some of the common causes of fever with thrombocytopenia. Objective To identify the causes of fever with thrombocytopenia, assess the clinical complications associated with febrile thrombocytopenia, and overall study the clinical profile of thrombocytopenia in a tertiary care hospital Method Medical records of all adult patients, admitted to a tertiary level hospital, with fever and thrombocytopenia (platelet count < 1,00,000 /mm3 ) were assessed (from October 2009 to March 2011). Detailed case history, general physical examination findings, routine and specific examinations were recorded according to a pre-decided format. Data were analysed using SPSS 16.0 Result Acute febrile illness with thrombocytopenia was most commonly seen in Dengue patients. Headache and arthralgia were more commonly encountered in scrub typhus. Platelet transfusions were necessitated in a large number of patients, especially in scrub typhus. Malaria patients had the highest mortality rate. Conclusion Acute Febrile Illnesses (AFI) are of varied origins, and proper diagnosis is imperative. The degree of thrombocytopenia in infections has a prognostic value. It can also help in differential diagnosis and clear identification of aetiology of acute febrile illnesses. Timely identification and management of thrombocytopenia in acute febrile illness can positively impact the overall patient outcome.
    Matched MeSH terms: Leptospirosis*
  14. Zamri Z, Shaker AH, Razman J
    Clin Ter, 2012;163(5):399-400.
    PMID: 23099969
    Leptospirosis is a zoonosis with worldwide distribution. It is often referred to as swineherd's disease, swamp fever or mud fever. In recent years there is increase incidence in leptospirosis in human. The incidence varies from sporadic in temperate zones to endemic in the tropical countries. Leptospirosis generally present with features of bacterial infection in acute phase following with multi organs complications. Acute bowel ischaemia with perforation following leptospirosis is a rare presentation . To the best of our knowledge, this is the first case report of such condition. The surgical management of this rare incidence will be discussed.
    Matched MeSH terms: Leptospirosis/complications*
  15. Drummoni WAD
    Lancet, 1956;267:297.
    Matched MeSH terms: Leptospirosis
  16. Clein L
    Lancet, 1956;267:289.
    Matched MeSH terms: Leptospirosis
  17. FAIRBURN AC, SEMPLE SJ
    Lancet, 1956 Jan 07;270(6906):13-6.
    PMID: 13279151
    Matched MeSH terms: Leptospirosis/therapy*
  18. McSwan DM
    Matched MeSH terms: Leptospirosis
  19. Galloway DJ
    Matched MeSH terms: Leptospirosis
  20. Ryrie CA
    Matched MeSH terms: Leptospirosis
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