Displaying publications 41 - 60 of 64 in total

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  1. Adele, Tan Guat Kean
    MyJurnal
    Objectives: 1) To establish the incidence of rotavirus infection in paediatric patients admitted to a private hospital in Malaysia with a diagnosis of community-acquired acute gastroenteritis. 2) To determine whether patients with rotaviral acute gastroenteritis have greater disease severity. Design Retrospective cross-sectional study. Setting An urban private hospital in Malaysia. Participants All paediatric patients with a discharge diagnosis of acute gastroenteritis (AGE) admitted to the hospital between September 2005 and March 2006. A total of 261 patients were included in the study. Results Rotavirus infection contributed to 54% of paediatric hospital admissions with discharge diagnoses of acute gastroenteritis. 74% of children with rotavirus infection were aged 5 years and below. This study demonstrated that patients with rotaviral gastroenteritis had greater disease severity, as measured by two indicators. Firstly, the average length of hospital stay was longer in patients who were rotavirus positive (5.14 days) compared to those who were rotavirus negative (4.81 days). These results were statistically significant (p
    Matched MeSH terms: Rotavirus Infections; Rotavirus
  2. Ng RL
    Med J Malaysia, 2018 10;73(5):328-329.
    PMID: 30350815
    A 5-year-old girl presented with three brief episodes of afebrile seizure within 24 hours. There was no significant past medical history but she had symptoms of acute gastroenteritis for the past 2 days. She was mildly dehydrated with no neurological signs. Serum electrolytes and blood sugar were normal and cerebrospinal fluid examination was negative for meningoencephalitis. Contrast-enhanced CT Brain showed no evidence of intracranial lesion, haemorrhage or meningeal enhancement. Only stool investigation was positive for Rotavirus. The conclusion of Benign Afebrile Convulsion with gastroenteritis (CwG) was established after excluding other serious causes of afebrile seizure in children.
    Matched MeSH terms: Rotavirus Infections; Rotavirus
  3. Ludin CM, Radzi JM, Maimunah A
    Malays J Med Sci, 2003 Jul;10(2):87-90.
    PMID: 23386803 MyJurnal
    The present study, analyzes data from 1991 to 2000 for rotavirus infection among children with diarrhoea and acute gastroenteritis admitted to the Hospital Universiti Sains Malaysia (HUSM). The Latex Slide Agglutination Test was used for the detection of rotavirus antigens. Out of 1097 stool samples tested, 207 samples or 18.8 % were found to be positive for rotavirus. The infection occurred most frequently in infants and young children from 6 months to 2 years of age. The infection was recorded highest in the year of 2000 - 48 cases (34.1%) and the lowest in 1999 - 5 cases (6.6%). Stool examination and cultures from the rotavirus positive samples revealed no parasites and enteropathogenic bacteria. These observations suggested that rotavirus could still remain as an important agent causing diarrhoea and gastroenteritis in young children admitted to HUSM.
    Matched MeSH terms: Rotavirus Infections; Rotavirus
  4. Yap KL, Sabil D, Muthu PA
    PMID: 6673122
    The prevalence of human rotavirus enteritis in children admitted to the gastroenteritis ward of the Kuala Lumpur General Hospital was studied in 1982. Human rotavirus in the stool of the patients was detected by enzyme-linked immunosorbent assay. The survey showed that rotavirus enteritis in children were observed throughout the year, with two broad peaks of rotavirus infection occurring around March and September. The lowest incidence was recorded in July, however, no prolonged period of low prevalence of rotavirus enteritis was observed. The average prevalence for the whole of 1982 was 40% of the total diarrhoeal cases. No significant relationship was noted between the prevalence of the disease and rainfall.
    Matched MeSH terms: Rotavirus Infections/epidemiology*
  5. Goh CT, Cheah PK, Soo TL, Lee WS
    Med J Malaysia, 2009 Jun;64(2):146-9.
    PMID: 20058575 MyJurnal
    We aimed to determine the epidemiology and burden of rotavirus (RV) gastroenteritis (GE) in children requiring hospital care in an urban setting in Sabah, Malaysia. A prospective study of all patients younger than 12 years of age admitted with acute GE to Queen Elizabeth Hospital, Sabah, over a six-month period (October 2005 to March 2006) was conducted. During the study period, a total of 167 children with acute GE who had stool samples examined for RV were studied. RV accounted for 16% of all diarrhoeal cases, and 1.7% of all admissions to the children's wards during the study period. There was no difference in severity of GE between RV and non-RV groups. RV infection is a common cause of childhood GE requiring hospital care in Sabah.
    Matched MeSH terms: Rotavirus Infections/economics; Rotavirus Infections/epidemiology*
  6. Lee WS, Veerasingam PD, Goh AY, Chua KB
    J Paediatr Child Health, 2003 9 13;39(7):518-22.
    PMID: 12969206
    AIM: To determine the epidemiology of rotavirus gastroenteritis in children admitted to an urban hospital in a developing country from South-East Asia.

    METHODS: Retrospective review of cases of acute gastroenteritis admitted to the children's ward of the University of Malaya Medical Centre, Kuala Lumpur, Malaysia, between 1996 and 1999.

    RESULTS: During the study period, 333 cases (24%) of 1362 stool samples, obtained from children admitted with acute diarrhoea, were positive for rotavirus. Acute gastroenteritis constituted 8.2%, and rotavirus infection 1.6% of all the paediatric admissions each year. Of the 271 cases analysed, 72% of the affected population were less than 2 years of age. Peak incidence of admissions was between January to March, and September to October. Dehydration was common (92%) but electrolyte disturbances, lactose intolerance (5.2%), prolonged diarrhoea (2.6%) and cow's milk protein intolerance was uncommon. No deaths were recorded.

    CONCLUSIONS: Rotavirus infection was a common cause of childhood diarrhoea that required hospital admission in an urban setting in Malaysia.

    Matched MeSH terms: Rotavirus Infections/epidemiology; Rotavirus Infections/therapy*
  7. Awang A, Yap K
    J Diarrhoeal Dis Res, 1990 Sep;8(3):82-6.
    PMID: 2122998
    Randomly selected samples from different animal colonies from two laboratory animal houses and from the wild-caught monkeys were tested for the presence of anti-rotavirus antibodies to estimate the rates of infection with group A rotavirus. Antibodies to the common group A rotaviral antigen were detected by a competitive enzyme-linked immunosorbent assay (ELISA) using reagents of WHO ELISA rotavirus detection kit. The results of the study showed that white mice, albino rats, and guinea pigs from long-established breeding colonies and resident house rats and house shrews from the animal house had no serological evidence of rotaviral infection. In contrast, one mousedeer from a colony of 19 animals and most of the rabbits from two separate breeding colonies at the same animal house were serologically positive for the infection. Also a significant number of the same species of monkey kept in captivity were found to acquire the infection. Leaf monkeys had no serological evidence of rotaviral infection. The infection rate in wild cynomolgus monkeys did not seem to be influenced by the different ecological environments of their respective habitats. The rate of infection in adults and juveniles was similar.
    Matched MeSH terms: Rotavirus Infections/epidemiology; Rotavirus Infections/veterinary*
  8. Lee WS
    J Pediatr Gastroenterol Nutr, 2000 Mar;30(3):241-5.
    PMID: 10749405
    Matched MeSH terms: Rotavirus Infections/epidemiology; Rotavirus Infections/prevention & control
  9. Hsu VP, Abdul Rahman HB, Wong SL, Ibrahim LH, Yusoff AF, Chan LG, et al.
    J Infect Dis, 2005 Sep 1;192 Suppl 1:S80-6.
    PMID: 16088810
    BACKGROUND: Accurate national estimates of the disease burden associated with rotavirus diarrhea are essential when considering implementation of a rotavirus vaccination program. We sought to estimate rotavirus disease-associated morbidity and mortality in Malaysia, using available sources of information.
    METHODS: We analyzed national data from the Ministry of Health (Kuala Lumpur, Malaysia) to derive rates of hospitalization, clinic visits, and deaths related to acute gastroenteritis (AG) among children <5 years of age. The number of events attributable to rotavirus infection was estimated by multiplying age-stratified rates of detection of rotavirus from 2 hospital surveillance sites by national data.
    RESULTS: In 1999 and 2000, an average of 13,936 children (1 in 187 children) were hospitalized annually for AG. Surveillance of visits to outpatient clinics for AG identified an average of 60,342 such visits/year between 1998 and 2000. The AG-associated mortality rate was 2.5 deaths/100,000 children. On the basis of the finding that 50% of children were hospitalized for rotavirus diarrhea, we estimated that 1 in 61 children will be hospitalized for rotavirus disease and that 1 in 37 children will seek treatment as an outpatient.
    CONCLUSIONS: Among Malaysian children, there is a significant burden associated with AG- and rotavirus disease-related hospitalizations and outpatient visits, and this burden potentially could be prevented by the use of rotavirus vaccines.
    Data source: (1) hospital discharges, (2) clinic visits for AG, and (3) registration of deaths, together with (4) new data from hospital-based rotavirus surveillance studies
    Matched MeSH terms: Rotavirus Infections/mortality; Rotavirus Infections/epidemiology*
  10. Lee WS, Rajasekaran G, Pee S, Karunakaran R, Hassan HH, Puthucheary SD
    J Paediatr Child Health, 2006 Sep;42(9):509-14.
    PMID: 16925536
    To study the role of rotavirus in children hospitalised for acute gastroenteritis (AGE) in two urban hospitals in Malaysia.
    Matched MeSH terms: Rotavirus Infections/epidemiology*; Rotavirus Infections/virology; Rotavirus/isolation & purification
  11. Kirnpal-Kaur BS, Yap KL, Tan SC
    Malays J Pathol, 1997 Dec;19(2):133-6.
    PMID: 10879254
    A blocking test was incorporated into the commercial IDEIA Adenovirus test (DAKO Diagnostics Ltd., Cambridgeshire, UK) to detect false positive results when faecal specimens were tested for adenovirus antigen. Immune rabbit serum raised against pooled adenovirus particles from human faecal specimens, together with the pre-immune serum, was used. Assessment of positive showed that false positives were produced under two different conditions: when results were based on visual determination instead of a cut-off value determined from photometric reading, and when absorbance values were not immediately read at the end of the test. Under the optimum condition for reading and assessment of test results (immediate reading and photometric determination), 11% of 65 adenovirus-positive samples were checked by the blocking ELISA as false positives. The rest of the specimens showed blocking of positive absorbance values by 70 to 98%. ELISA was found to be more sensitive than immune electron microscopy on samples with lower antigen concentration.
    Matched MeSH terms: Rotavirus Infections/diagnosis; Rotavirus Infections/immunology; Rotavirus Infections/virology; Rotavirus/immunology; Rotavirus/isolation & purification
  12. Prameela KK, Vijaya LR
    Malays J Nutr, 2012 Apr;18(1):103-11.
    PMID: 23713234 MyJurnal
    Globally, rotaviral vaccines in use today have contributed to the reduction of the incidence of rotaviral diarrhoeas. Despite the substantial protection conferred by the current vaccines against the rotaviral strains, it is only prudent to recognise that other protective factors, like breastfeeding, also provide some degree of protection against this disease. This article has attempted to review some important mechanisms of protection in breast milk against the rotaviruses and highlight the oft forgotten non-immunoglobulin fraction in breast milk as an additional tool of protection against rotavirus disease. The adaptive capacity of breast milk to environment is another compelling reason to continue breastfeeding as it can usefully complement and be significant in the use of many vaccines. Vital immunoprotective constituents in breast milk beneficially protect the infant by initiating and strengthening many immune responses and should be borne in mind as essential tools of defence even in an era where vaccines play a pivotal role in the combat against certain diseases. It is impressive that besides nutritive advantages, the suckling infant enjoys appreciable immunoprotection via exclusive breastfeeding.
    Matched MeSH terms: Rotavirus Infections/immunology; Rotavirus Infections/prevention & control*
  13. Lestari FB, Vongpunsawad S, Wanlapakorn N, Poovorawan Y
    J Biomed Sci, 2020 May 21;27(1):66.
    PMID: 32438911 DOI: 10.1186/s12929-020-00649-8
    BACKGROUND: Rotaviruses (RVs) are recognized as a major cause of acute gastroenteritis (AGE) in infants and young children worldwide. Here we summarize the virology, disease burden, prevalence, distribution of genotypes and seasonality of RVs, and the current status of RV vaccination in Southeast Asia (Cambodia, Indonesia, Lao People's Democratic Republic, Malaysia, Myanmar, Philippines, Singapore, Thailand, and Vietnam) from 2008 to 2018.

    METHODS: Rotavirus infection in Children in Southeast Asia countries was assessed using data from Pubmed and Google Scholars. Most countries in Southeast Asia have not yet introduced national RV vaccination programs. We exclude Brunei Darussalam, and Timor Leste because there were no eligible studies identified during that time.

    RESULTS: According to the 2008-2018 RV surveillance data for Southeast Asia, 40.78% of all diarrheal disease in children were caused by RV infection, which is still a major cause of morbidity and mortality in children under 5 years old in Southeast Asia. Mortality was inversely related to socioeconomic status. The most predominant genotype distribution of RV changed from G1P[8] and G2P[4] into the rare and unusual genotypes G3P[8], G8P[8], and G9P[8]. Although the predominat strain has changed, but the seasonality of RV infection remains unchanged. One of the best strategies for decreasing the global burden of the disease is the development and implementation of effective vaccines.

    CONCLUSIONS: The most predominant genotype distribution of RV was changed time by time. Rotavirus vaccine is highly cost effective in Southeast Asian countries because the ratio between cost per disability-adjusted life years (DALY) averted and gross domestic product (GDP) per capita is less than one. These data are important for healthcare practitioners and officials to make appropriate policies and recommendations about RV vaccination.

    Matched MeSH terms: Rotavirus Infections; Rotavirus; Rotavirus Vaccines
  14. Samuel S, Vadivelu J, Parasakthi N
    PMID: 9322293
    Amongst 107 diarrheal cases studied a bacterial agent was isolated from 71 (66%) cases of which 60 (85%) were due to a single agent and the remaining 11 (15%) were of mixed infections. Enterotoxigenic Escherichia coli (ETEC) was isolated from 65 cases. Other pathogens isolated included Salmonella spp, Shigella spp and rotavirus. There was a higher isolation rate of ETEC from females and rotavirus from males. The infection rate was found to higher for the 0-2 year age group as compared to the 3-5 year age group. Amongst the ETEC isolated the STa 2 toxotype was the predominant type.
    Matched MeSH terms: Rotavirus Infections/diagnosis; Rotavirus Infections/microbiology; Rotavirus Infections/epidemiology
  15. Chai PF, Lee WS
    Vaccine, 2009 Nov 20;27 Suppl 5:F112-5.
    PMID: 19931708 DOI: 10.1016/j.vaccine.2009.08.069
    From August 2006 to July 2007 a prospective study of out-of-pocket costs incurred by care-givers of children hospitalized for rotavirus gastroenteritis was conducted in a hospital in Malaysia. Data on caretaker out-of-pocket costs were collected from 260 children hospitalized with diarrhoea. A stool sample was collected from 198 of these children of which 46 (23%) were positive for rotavirus by latex agglutination assay. The mean (median; interquartile range) out-of-pocket cost incurred by the care-givers was US$194 (US$169; US$47-738), constituting 26% of average monthly income of the households surveyed. Major components of the cost were hospital expenses (45%) and productivity loss (37%). These findings will allow further assessment of the cost-effectiveness of any future rotavirus immunization program in Malaysia.
    Matched MeSH terms: Rotavirus Infections/economics*
  16. Yap KL, Ooi YE, Khor CM, Wong SH
    Malays J Pathol, 1992 Dec;14(2):105-10.
    PMID: 1338997
    The group A rotavirus staphylococcal co-agglutination test was evaluated and its sensitivity and specificity compared with an in-house enzyme-linked immunosorbent assay (ELISA) and a commercial latex agglutination test (Rotalex). In addition, the storage stability of the staphylococcal reagents was ascertained. Examination of 136 clarified suspensions of diarrhoeal faeces by the staphylococcal co-agglutination test revealed a high proportion of false positives (26%) and uninterpretable results (34%) due to non-specific agglutination. Non-specific agglutination could be removed effectively by prior absorption of the clarified faecal specimens with unsensitized staphylococci. The staphylococcal co-agglutination test was less sensitive and specific than the in-house enzyme-linked immunosorbent assay but was comparable to the Rotalex slide latex agglutination test. The staphylococcal reagents have a shelf life of at least 29 weeks.
    Matched MeSH terms: Rotavirus/isolation & purification*
  17. Yousuf FA, Siddiqui R, Khan NA
    Rev Inst Med Trop Sao Paulo, 2017 Jun 01;59:e32.
    PMID: 28591260 DOI: 10.1590/S1678-9946201759032
    Rotavirus and pathogenic free-living amoebae are causative agents of important health problems, especially for developing countries like Pakistan where the population has limited access to clean water supplies. Here, we evaluated the prevalence of rotavirus and free-living amoebae (Acanthamoeba spp., Balamuthia mandrillaris, Naegleria fowleri) in drinking water supplies of Karachi, Pakistan. Six water filtration plants that supply drinking water to the population of Karachi were investigated. Additionally, drinking water samples from households were analyzed for the presence of rotavirus and free-living amoebae. Rotavirus was present in 35% of the water samples collected from water filtration plants; however, domestic tap water samples had a prevalence of only 5%. Out of 20 water samples from filtration plants, 13 (65%) were positive for Acanthamoeba spp., and one (5%) was positive for B. mandrillaris. Out of 20 drinking water samples collected from different areas of Karachi, 35% were positive for Acanthamoeba spp. Rotavirus was detected in 5% of the drinking water samples tested. Overall, these findings showed for the first time the presence of rotavirus, in addition to pathogenic free-living amoebae in drinking water supplies of Karachi that could be an important public health risk for the affected population.
    Matched MeSH terms: Rotavirus/isolation & purification*
  18. Rasool NB, Monroe SS, Glass RI
    J Virol Methods, 2002 Feb;100(1-2):1-16.
    PMID: 11742648
    Four nucleic acid extraction protocols were examined for their suitability for extraction of the ssRNA, dsRNA and dsDNA genomes of gastroenteritis viruses, for PCR detection. Protocol (A), employed specimen lysis with guanidinium thiocyanate, extraction with phenol-chloroform-isoamyl alcohol and nucleic acid purification by size-fractionated silica particles. Protocol (B), utilised specimen lysis with guanidinium thiocyanate and nucleic acid purification by silica, followed by phenol-chloroform-isoamyl alcohol extraction. Protocol (C), employed specimen lysis with guanidinium thiocyanate and nucleic acid purification by RNAID glass powder. Protocol (D), employed specimen lysis with sodium dodecyl sulphate, proteinase K digestion and extraction with phenol-chloroform-isoamyl alcohol. Of the four protocols, (B) appeared to be a suitable candidate 'universal' nucleic acid extraction procedure for PCR detection of different viral agents of gastroenteritis in a single nucleic acid extract of a faecal specimen, irrespective of genome composition. Omission of the phenol-chloroform extraction step did not affect negatively the ability of protocol (B) to allow PCR detection of gastroenteritis viruses in faecal specimens. PCR detection of NLVs, astroviruses, rotaviruses and adenoviruses, in single nucleic acid extracts of faecal specimens obtained from the field, confirmed the universality of the modified protocol (B). We propose the modified protocol (B) as a 'universal' nucleic acid extraction procedure, for monoplex PCR detection of gastroenteritis viruses in single nucleic acid extracts of faecal specimens and for development of multiplex PCR for their simultaneous detection.
    Matched MeSH terms: Rotavirus Infections/virology*; Rotavirus/genetics; Rotavirus/isolation & purification
  19. Koe, S.L., Puthucheary, S.D., Lam, S.K.
    MyJurnal
    The stools of 97 children with acute gastroenteritis, attending a private paediatric clinic, were studied for infectious agents. Putative pathogenic microorganisms were identified in 47 cases (48.5%). Food poisoning Salmonella was the most common bacteria detected, 25 cases (25.8%). Rotavirus was present in 9 cases (9.2%). Interview of the parents and care-persons revealed a general lack of knowledge in the proper cleaning and sterilisation of milk bottles, rubber teats and pacifiers. In 44 households there were at least one animal kept and there were positive bacterial isolates from 47% of such households. However, positive isolates were found in only 26% of households with no kept animals. The implications of these findings are discussed. (Copied from article).
    Matched MeSH terms: Rotavirus
  20. Lili, Z.M., Noridah, O.
    MyJurnal
    Acute Gastroenteritis (AGE) is common world wide and is a major health problem. The commonest cause is from contaminated water or food. Common infective agents are Rotavirus, Staph. aureus and Bacillus cereus. There was an AGE outbreak in Ipoh City from late August till early October 2006. Epidemiological and laboratory investigations were done. Fresh stool samples were taken from symptomatic patients. Water and food sampling were also done. Descriptive analysis of the outbreak was done. A total of 170 patients, mostly between 1 - 5 years of age, were affected. The highest incidents were seen in Bercham. Fever and diarrhea were the prominent features. Two stool samples (13.3%) were positive for E.coli and rotavirus respectively. Twelve of the twenty (60%) water samples taken were contaminated with coliform and fecal matter. Twenty-one of the eighty ((26.3%) food samples taken grew either E.coli, Staph. aureus or Bacillus cereus. It was concluded that a general source was responsible for this problem. The water supply to Ipoh City and the surrounding area is the most likely source. Novovirus was suspected as the organism involved because of the self-limiting and mild nature of the illness that occurred in this outbreak.
    The AGE outbreak in Kinta District in September 2006 is due to contaminated
    water supply from two water treatment
    Matched MeSH terms: Rotavirus
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