Displaying publications 81 - 100 of 231 in total

Abstract:
Sort:
  1. Soe HHK, Than NN, Lwin H, Phyu KL, Htay MNN, Moe S, et al.
    J Family Med Prim Care, 2018 9 21;7(4):756-761.
    PMID: 30234049 DOI: 10.4103/jfmpc.jfmpc_300_17
    Background: Disease surveillance is one of the major components to combat against infectious diseases. As health-care professionals are indispensable to mandatory notifiable disease surveillance, their knowledge and attitudes toward infectious disease notification played an important role for timely and effective reporting to the surveillance system. Therefore, we aimed to determine the knowledge of mandatory notifiable infectious diseases in Malaysia and attitude towards infectious disease reporting among final year medical students.

    Methods: A cross-sectional study was conducted from May to June 2017 in the private medical college in Malaysia.

    Materials and Methods: We purposively selected the final year (semester 10) medical students and a total of 124 students participated in this study. We collected data using a self-administered, structured questionnaire. Data were analyzed using descriptive statistics, independent t-test, and one-way analysis of variance.

    Results: Among the final year medical students, 47.5% had moderate knowledge but 4.2% had good knowledge of mandatory infectious disease notification. Only 3.2% of the students correctly answered all the notifiable diseases listed in the questionnaire. Most of the students had positive attitude toward communicable diseases reporting, rewards, and penalty for notification. There was no significant relationship between sociodemographic characteristics and knowledge and attitude of infectious disease notification.

    Conclusions: The majority of the final year medical students had moderate level of knowledge and positive attitude of infectious disease notification; however, there were some deficiencies. Better instruction and training on infectious disease notification procedures of Malaysia should be provided to the final year medical students which could not only reduce underreporting but also improve timely and effective reporting in future.

    Matched MeSH terms: Communicable Diseases
  2. Cheok YY, Lee CYQ, Cheong HC, Looi CY, Wong WF
    Microorganisms, 2020 Jan 17;8(1).
    PMID: 31963395 DOI: 10.3390/microorganisms8010127
    Chlamydia trachomatis and C. pneumoniae are members of the Chlamydiaceae family of obligate intracellular bacteria. The former causes diseases predominantly at the mucosal epithelial layer of the urogenital or eye, leading to pelvic inflammatory diseases or blindness; while the latter is a major causative agent for pulmonary infection. On top of these well-described diseases at the respective primary infection sites, Chlamydia are notoriously known to migrate and cause pathologies at remote sites of a host. One such example is the sexually acquired reactive arthritis that often occurs at few weeks after genital C. trachomatis infection. C. pneumoniae, on the other hand, has been implicated in an extensive list of chronic inflammatory diseases which include atherosclerosis, multiple sclerosis, Alzheimer's disease, asthma, and primary biliary cirrhosis. This review summarizes the Chlamydia infection associated diseases at the secondary sites of infection, and describes the potential mechanisms involved in the disease migration and pathogenesis.
    Matched MeSH terms: Communicable Diseases
  3. Al-Abd NM, Nor ZM, Al-Adhroey AH, Suhaimi A, Sivanandam S
    PMID: 24298292 DOI: 10.1155/2013/986573
    Lymphatic filariasis is a parasitic infection that causes a devastating public health and socioeconomic burden with an estimated infection of over 120 million individuals worldwide. The infection is caused by three closely related nematode parasites, namely, Wuchereria bancrofti, Brugia malayi, and B. timori, which are transmitted to human through mosquitoes of Anopheles, Culex, and Aedes genera. The species have many ecological variants and are diversified in terms of their genetic fingerprint. The rapid spread of the disease and the genetic diversification cause the lymphatic filarial parasites to respond differently to diagnostic and therapeutic interventions. This in turn prompts the current challenge encountered in its management. Furthermore, most of the chemical medications used are characterized by adverse side effects. These complications urgently warrant intense prospecting on bio-chemicals that have potent efficacy against either the filarial worms or thier vector. In lieu of this, we presented a review on recent literature that reported the efficacy of filaricidal biochemicals and those employed as vector control agents. In addition, methods used for biochemical extraction, screening procedures, and structure of the bioactive compounds were also presented.
    Matched MeSH terms: Communicable Diseases
  4. Hikmah N', Anuar TS
    Malays J Med Sci, 2020 Mar;27(2):151-158.
    PMID: 32788850 MyJurnal DOI: 10.21315/mjms2020.27.2.15
    Background: Mobile phones (MPs) have become one of the most indispensable accessories in social and professional life. Though they offer plenty of benefits, MPs are prolific breeding grounds for infectious pathogens in communities. Thus, the aim of this study was to identify the prevalence of bacterial contamination and determine antimicrobial susceptibility pattern of Staphylococcus aureus (S. aureus) from MPs.

    Methods: A cross-sectional study was conducted from March to July 2019 on 126 students and 37 laboratory staff/clinical instructors' MPs from the Faculty of Health Sciences, Universiti Teknologi MARA, Malaysia by a simple random sampling technique. Along with the questionnaire, a swab sample from each participant's MPs was collected and transported to the microbiology laboratory for bacterial culture as per standard microbiological procedures and antimicrobial susceptibility test by the disc diffusion technique. Data were analysed by the Statistical Package for Social Sciences Programme version 24.

    Results: All of the tested MPs were contaminated with either single or mix bacterial agents. Bacillus spp. (74.8%), coagulase-negative staphylococci (CoNS; 47.9%) and S. aureus (20.9%) were the most predominant bacterial isolates, whilst the least isolate was Proteus vulgaris (P. vulgaris) (2.5%). Oxacillin resistance was seen in 5.9% of S. aureus isolate. A comparison of bacteria type and frequency among gender showed a significant difference with P. vulgaris (P = 0.003) and among profession showed a significant difference with S. aureus (P = 0.004).

    Conclusion: The present study indicates that MPs can serve as a vector for both pathogenic and non-pathogenic organisms. Therefore, full guidelines about restricting the use of MPs in laboratory environments, hand hygiene and frequent decontamination of MPs are recommended to limit the risk of cross-contamination and healthcare-associated infections caused by MPs.

    Matched MeSH terms: Communicable Diseases
  5. Dixit A, Yadav R, Singh AV
    Malays J Med Sci, 2020 Jul;27(4):154-158.
    PMID: 32863755 DOI: 10.21315/mjms2020.27.4.15
    Severe acute respiratory illness caused by 2019 novel coronavirus (2019-nCoV), officially named severe acute respiratory syndrome coronavirus (SARS-CoV-2) in late December 2019 is an extremely communicable disease. World Health Organization (WHO) declared coronavirus disease 2019 (COVID-19) as a pandemic as it has spread to at least 200 countries in a short span of time. Being a new disease there is lack of information about pathogenesis and proliferation pathways of this new coronavirus. Currently there is no effective treatment for coronavirus infection; major effort is to develop vaccine against the virus and development of therapeutic drugs for the disease. The development of genome-based vaccine and therapeutic antibodies require thorough testing for safety and will be available after some time. In the meanwhile, the available practical approach is to repurpose existing therapeutic agents, with proven safety record as a rapid response measure for the current pandemic. Here we discuss the presently used repurposed drugs for COVID-19 and the potential for ivermectin (IVM) to be used as a therapeutic option in COVID-19.
    Matched MeSH terms: Communicable Diseases
  6. Anderson S
    Pharm Hist (Lond), 2012 Sep;42(3):54-63.
    PMID: 24620479
    Matched MeSH terms: Communicable Diseases/drug therapy; Communicable Diseases/history
  7. Pulliam JR, Epstein JH, Dushoff J, Rahman SA, Bunning M, Jamaluddin AA, et al.
    J R Soc Interface, 2012 Jan 7;9(66):89-101.
    PMID: 21632614 DOI: 10.1098/rsif.2011.0223
    Emerging zoonoses threaten global health, yet the processes by which they emerge are complex and poorly understood. Nipah virus (NiV) is an important threat owing to its broad host and geographical range, high case fatality, potential for human-to-human transmission and lack of effective prevention or therapies. Here, we investigate the origin of the first identified outbreak of NiV encephalitis in Malaysia and Singapore. We analyse data on livestock production from the index site (a commercial pig farm in Malaysia) prior to and during the outbreak, on Malaysian agricultural production, and from surveys of NiV's wildlife reservoir (flying foxes). Our analyses suggest that repeated introduction of NiV from wildlife changed infection dynamics in pigs. Initial viral introduction produced an explosive epizootic that drove itself to extinction but primed the population for enzootic persistence upon reintroduction of the virus. The resultant within-farm persistence permitted regional spread and increased the number of human infections. This study refutes an earlier hypothesis that anomalous El Niño Southern Oscillation-related climatic conditions drove emergence and suggests that priming for persistence drove the emergence of a novel zoonotic pathogen. Thus, we provide empirical evidence for a causative mechanism previously proposed as a precursor to widespread infection with H5N1 avian influenza and other emerging pathogens.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology*; Communicable Diseases, Emerging/transmission
  8. Leong CC
    Med J Malaysia, 2006 Dec;61(5):592-8.
    PMID: 17623961
    On review of 3117 patients' records (all were female Indonesian foreign workers over the span of eight years (1997 to 2004 in a private clinic in Johor Bahru, 223 cases (7.2%) were found to have various medical problems. These 3117 foreigners were to be employed as domestic helpers in Malaysia. They were examined upon arrival in Johor Bahru even though our government did not require this pre-requisite (before 1st August 2005) as they were examined and certified fit in their country of origin before embarking to Malaysia. The proportion of female Indonesian foreign workers who were afflicted with category 1 conditions was 55.6% (which rendered them unfit for employment) and category 2 conditions was 44.4%. The medical problem detected most frequently was hypertension. Sixty-one (80.3%) out of 76 workers had stage 2 hypertension (JNC 7 report). Pulmonary tuberculosis ranked second in this review and is a category 1 condition. This paper supports the recent move by the Malaysian Ministry of Health to implement mandatory medical examinations for all foreign workers arriving in Malaysia within one month of arrival regardless of whether or not they are certified fit in their countries of origin.
    Matched MeSH terms: Communicable Diseases/diagnosis; Communicable Diseases/epidemiology
  9. Dussart P, Cartet G, Huguet P, Lévêque N, Hajjar C, Morvan J, et al.
    J Med Virol, 2005 Apr;75(4):559-65.
    PMID: 15714481
    An outbreak of acute hemorrhagic conjunctivitis occurred in French Guiana between April and July 2003, with approximately 6,000 cases in the two major cities Kourou and Cayenne. Since acute hemorrhagic conjunctivitis is not a notifiable disease in France, there was no registration of the number of cases. Therefore, these were estimated by comparing the consumption of antibiotic eye drops and ophthalmic ointments during 2002 and 2003. The outbreak rapidly spread into the Caribbean Islands, causing an outbreak in Guadeloupe in October. Viral isolates from conjunctival swabs of 16 patients were confirmed to be enterovirus by PCR directed to the 5' UTR of the genome. The isolates could not be neutralized by the Melnick intersecting pools, but were shown to be CV-A24 variant by limited sequencing within the VP1 and 3C regions of 12 strains. Phylogenetic analysis revealed that they were similar to the genotype III strains causing outbreaks in Korea 2002 and Malaysia 2003. The previous outbreak of conjunctivitis caused by CV-A24 in the Caribbean in the 1980s was also introduced from Asia, and disappeared after 3 years. This new introduction from Asia and its rapid spread into the Caribbean, where the infection disappeared after a few months, indicates that the CV-A24 variant has a different epidemiological pattern in this region compared to South East Asia, since it has not established an endemic infection. It had to be reintroduced from Asia, where it has been circulating since the 1970s.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology*; Communicable Diseases, Emerging/virology
  10. Rahman SA, Hassan SS, Olival KJ, Mohamed M, Chang LY, Hassan L, et al.
    Emerg Infect Dis, 2010 Dec;16(12):1990-3.
    PMID: 21122240 DOI: 10.3201/eid1612.091790
    We isolated and characterized Nipah virus (NiV) from Pteropus vampyrus bats, the putative reservoir for the 1998 outbreak in Malaysia, and provide evidence of viral recrudescence. This isolate is monophyletic with previous NiVs in combined analysis, and the nucleocapsid gene phylogeny species.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology*; Communicable Diseases, Emerging/virology
  11. Chong ZL, Sekaran SD, Soe HJ, Peramalah D, Rampal S, Ng CW
    BMC Infect Dis, 2020 Mar 12;20(1):210.
    PMID: 32164538 DOI: 10.1186/s12879-020-4911-5
    BACKGROUND: Dengue is an emerging infectious disease that infects up to 390 million people yearly. The growing demand of dengue diagnostics especially in low-resource settings gave rise to many rapid diagnostic tests (RDT). This study evaluated the accuracy and utility of ViroTrack Dengue Acute - a new biosensors-based dengue NS1 RDT, SD Bioline Dengue Duo NS1/IgM/IgG combo - a commercially available RDT, and SD Dengue NS1 Ag enzyme-linked immunosorbent assay (ELISA), for the diagnosis of acute dengue infection.

    METHODS: This prospective cross-sectional study consecutively recruited 494 patients with suspected dengue from a health clinic in Malaysia. Both RDTs were performed onsite. The evaluated ELISA and reference tests were performed in a virology laboratory. The reference tests comprised of a reverse transcription-polymerase chain reaction and three ELISAs for the detection of dengue NS1 antigen, IgM and IgG antibodies, respectively. The diagnostic performance of evaluated tests was computed using STATA version 12.

    RESULTS: The sensitivity and specificity of ViroTrack were 62.3% (95%CI 55.6-68.7) and 95.0% (95%CI 91.7-97.3), versus 66.5% (95%CI 60.0-72.6) and 95.4% (95%CI 92.1-97.6) for SD NS1 ELISA, and 52.4% (95%CI 45.7-59.1) and 97.7% (95%CI 95.1-99.2) for NS1 component of SD Bioline, respectively. The combination of the latter with its IgM and IgG components were able to increase test sensitivity to 82.4% (95%CI 76.8-87.1) with corresponding decrease in specificity to 87.4% (95%CI 82.8-91.2). Although a positive test on any of the NS1 assays would increase the probability of dengue to above 90% in a patient, a negative result would only reduce this probability to 23.0-29.3%. In contrast, this probability of false negative diagnosis would be further reduced to 14.7% (95%CI 11.4-18.6) if SD Bioline NS1/IgM/IgG combo was negative.

    CONCLUSIONS: The performance of ViroTrack Dengue Acute was comparable to SD Dengue NS1 Ag ELISA. Addition of serology components to SD Bioline Dengue Duo significantly improved its sensitivity and reduced its false negative rate such that it missed the fewest dengue patients, making it a better point-of-care diagnostic tool. New RDT like ViroTrack Dengue Acute may be a potential alternative to existing RDT if its combination with serology components is proven better in future studies.

    Matched MeSH terms: Communicable Diseases, Emerging/diagnosis; Communicable Diseases, Emerging/virology
  12. Bala JA, Balakrishnan KN, Abdullah AA, Mohamed R, Haron AW, Jesse FFA, et al.
    Microb Pathog, 2018 Jul;120:55-63.
    PMID: 29709684 DOI: 10.1016/j.micpath.2018.04.057
    Orf disease is known to be enzootic among small ruminants in Asia, Africa, and some other parts of the world. The disease caused by orf virus is highly contagious among small ruminant species. Unfortunately, it has been neglected for decades because of the general belief that it only causes a self-limiting disease. On the other hand, in the past it has been reported to cause huge cumulative financial losses in livestock farming. Orf disease is characterized by localized proliferative and persistent skin nodule lesions that can be classified into three forms: generalized, labial and mammary or genitals. It can manifest as benign or malignant types. The later type of orf can remain persistent, often fatal and usually causes a serious outbreak among small ruminant population. Morbidity and mortality rates of orf are higher especially in newly infected kids and lambs. Application of antibiotics together with antipyretic and/or analgesic is highly recommended as a supportive disease management strategy for prevention of subsequent secondary microbial invasion. The presence of various exotic orf virus strains of different origin has been reported in many countries mostly due to poorly controlled cross-border virus transmission. There have been several efforts to develop orf virus vaccines and it was with variable success. The use of conventional vaccines to control orf is a debatable topic due to the concern of short term immunity development. Following re-infection in previously vaccinated animals, it is uncommon to observe the farms involved to experience rapid virus spread and disease outbreak. Meanwhile, cases of zoonosis from infected animals to animal handler are not uncommon. Despite failures to contain the spread of orf virus by the use of conventional vaccines, vaccination of animals with live orf virus is still considered as one of the best choice. The review herein described pertinent issues with regard to the development and use of potential effective vaccines as a control measure against orf virus infection.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology; Communicable Diseases, Emerging/prevention & control*; Communicable Diseases, Emerging/veterinary*; Communicable Diseases, Emerging/virology
  13. Wong KT, Shieh WJ, Kumar S, Norain K, Abdullah W, Guarner J, et al.
    Am J Pathol, 2002 Dec;161(6):2153-67.
    PMID: 12466131
    In 1998, an outbreak of acute encephalitis with high mortality rates among pig handlers in Malaysia led to the discovery of a novel paramyxovirus named Nipah virus. A multidisciplinary investigation that included epidemiology, microbiology, molecular biology, and pathology was pivotal in the discovery of this new human infection. Clinical and autopsy findings were derived from a series of 32 fatal human cases of Nipah virus infection. Diagnosis was established in all cases by a combination of immunohistochemistry (IHC) and serology. Routine histological stains, IHC, and electron microscopy were used to examine autopsy tissues. The main histopathological findings included a systemic vasculitis with extensive thrombosis and parenchymal necrosis, particularly in the central nervous system. Endothelial cell damage, necrosis, and syncytial giant cell formation were seen in affected vessels. Characteristic viral inclusions were seen by light and electron microscopy. IHC analysis showed widespread presence of Nipah virus antigens in endothelial and smooth muscle cells of blood vessels. Abundant viral antigens were also seen in various parenchymal cells, particularly in neurons. Infection of endothelial cells and neurons as well as vasculitis and thrombosis seem to be critical to the pathogenesis of this new human disease.
    Matched MeSH terms: Communicable Diseases, Emerging/diagnosis; Communicable Diseases, Emerging/epidemiology; Communicable Diseases, Emerging/pathology*; Communicable Diseases, Emerging/virology
  14. Fornace KM, Drakeley CJ, William T, Espino F, Cox J
    Trends Parasitol, 2014 Nov;30(11):514-9.
    PMID: 25443854 DOI: 10.1016/j.pt.2014.09.001
    The potential applications of unmanned aerial vehicles (UAVs), or drones, have generated intense interest across many fields. UAVs offer the potential to collect detailed spatial information in real time at relatively low cost and are being used increasingly in conservation and ecological research. Within infectious disease epidemiology and public health research, UAVs can provide spatially and temporally accurate data critical to understanding the linkages between disease transmission and environmental factors. Using UAVs avoids many of the limitations associated with satellite data (e.g., long repeat times, cloud contamination, low spatial resolution). However, the practicalities of using UAVs for field research limit their use to specific applications and settings. UAVs fill a niche but do not replace existing remote-sensing methods.
    Matched MeSH terms: Communicable Diseases/epidemiology*
  15. Lim BN, Tye GJ, Choong YS, Ong EB, Ismail A, Lim TS
    Biotechnol Lett, 2014 Dec;36(12):2381-92.
    PMID: 25214212 DOI: 10.1007/s10529-014-1635-x
    Antibodies have been used efficiently for the treatment and diagnosis of many diseases. Recombinant antibody technology allows the generation of fully human antibodies. Phage display is the gold standard for the production of human antibodies in vitro. To generate monoclonal antibodies by phage display, the generation of antibody libraries is crucial. Antibody libraries are classified according to the source where the antibody gene sequences were obtained. The most useful library for infectious diseases is the immunized library. Immunized libraries would allow better and selective enrichment of antibodies against disease antigens. The antibodies generated from these libraries can be translated for both diagnostic and therapeutic applications. This review focuses on the generation of immunized antibody libraries and the potential applications of the antibodies derived from these libraries.
    Matched MeSH terms: Communicable Diseases/therapy*
  16. Harvey K, Esposito DH, Han P, Kozarsky P, Freedman DO, Plier DA, et al.
    MMWR Surveill Summ, 2013 Jul 19;62:1-23.
    PMID: 23863769
    In 2012, the number of international tourist arrivals worldwide was projected to reach a new high of 1 billion arrivals, a 48% increase from 674 million arrivals in 2000. International travel also is increasing among U.S. residents. In 2009, U.S. residents made approximately 61 million trips outside the country, a 5% increase from 1999. Travel-related morbidity can occur during or after travel. Worldwide, 8% of travelers from industrialized to developing countries report becoming ill enough to seek health care during or after travel. Travelers have contributed to the global spread of infectious diseases, including novel and emerging pathogens. Therefore, surveillance of travel-related morbidity is an essential component of global public health surveillance and will be of greater importance as international travel increases worldwide.
    Matched MeSH terms: Communicable Diseases/epidemiology*
  17. Jayakumar G
    Med J Malaysia, 2006 Dec;61(5):516-8.
    PMID: 17623949
    Matched MeSH terms: Communicable Diseases/diagnosis*
  18. Barraclough S, Phua KL
    Bull World Health Organ, 2007 Mar;85(3):225-9.
    PMID: 17486215
    Malaysia's global, regional and bilateral international health relations are surveyed against the historical backdrop of the country's foreign policy. Malaysia has always participated in multilateral agencies, most notably the World Health Organization, as such agencies are part of the longstanding fabric of "good international citizenship". The threats of infectious diseases to human health and economic activity have caused an intensification and an organizational formalization of Malaysian health diplomacy, both regionally and bilaterally. Such diplomacy has also established a basis for developing a wider set of cooperative relationships that go beyond responding to the threat of pandemics. As Malaysia approaches "developed" status, its health sector is becoming increasingly integrated into the global economy through joint research and development ventures and transnational investment. At the same time, it will have the technological, financial and human resources to play an expanded altruistic role in global and regional health.
    Matched MeSH terms: Communicable Diseases/epidemiology
  19. Raja NS, Ahmed MZ, Singh NN
    J Postgrad Med, 2005 Apr-Jun;51(2):140-5.
    PMID: 16006713
    Infectious diseases account for a third of all the deaths in the developing world. Achievements in understanding the basic microbiology, pathogenesis, host defenses and expanded epidemiology of infectious diseases have resulted in better management and reduced mortality. However, an emerging infectious disease, melioidosis, is becoming endemic in the tropical regions of the world and is spreading to non-endemic areas. This article highlights the current understanding of melioidosis including advances in diagnosis, treatment and prevention. Better understanding of melioidosis is essential, as it is life-threatening and if untreated, patients can succumb to it. Our sources include a literature review, information from international consensus meetings on melioidosis and ongoing discussions within the medical and scientific community.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology*
  20. Lam SK
    Asia Pac J Public Health, 2002;14(1):6-8.
    PMID: 12597511 DOI: 10.1177/101053950201400103
    Emerging and re-emerging infectious diseases have become a major global problem. Malaysia appears to be an epicenter for such infections and in recent years, several outbreaks have occurred resulting in loss of lives and economic hardships. In this paper, we discussed the outbreaks of leptospirosis, enterovirus 71 encephalitis, chikungunya polyarthritis and Nipah encephalitis and how a developing country such as Malaysia managed the situation with the help of international agencies and organisations. Many valuable lessons were learned and by sharing our experience, it is hoped that we will be in a better position to handle future outbreaks and prevent their spread to countries in the region.
    Matched MeSH terms: Communicable Diseases, Emerging/epidemiology*
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links