Displaying publications 21 - 40 of 79 in total

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  1. Head MG, Fitchett JR, Newell ML, Scott JA, Harris JN, Clarke SC, et al.
    EBioMedicine, 2015 Sep;2(9):1193-9.
    PMID: 26501117 DOI: 10.1016/j.ebiom.2015.06.024
    BACKGROUND: The burden of pneumonia continues to be substantial, particularly among the poorest in global society. We describe here the trends for UK pneumonia R&D investment and published outputs, and correlate with 2013 global mortality.

    METHODS: Data related to awards to UK institutions for pneumonia research from 1997 to 2013 were systematically sourced and categorised by disease area and type of science. Investment was compared to mortality figures in 2010 and 2013 for pneumonia, tuberculosis and influenza. Investment was also compared to publication data.

    RESULTS: Of all infectious disease research between 2011 and 2013 (£917.0 million), £28.8 million (3.1%) was for pneumonia. This was an absolute and proportionate increase from previous time periods. Translational pneumonia research (33.3%) received increased funding compared with 1997-2010 where funding was almost entirely preclinical (87.5%, here 30.9%), but high-burden areas such as paediatrics, elderly care and antimicrobial resistance received little investment. Annual investment remains volatile; publication temporal trends show a consistent increase. When comparing investment to global burden with a novel 'investment by mortality observed' metric, tuberculosis (£48.36) and influenza (£484.21) receive relatively more funding than pneumonia (£43.08), despite investment for pneumonia greatly increasing in 2013 compared to 2010 (£7.39). Limitations include a lack of private sector data and the need for careful interpretation of the comparisons with burden, plus categorisation is subjective.

    CONCLUSIONS: There has been a welcome increase for pneumonia funding awarded to UK institutions in 2011-2013 compared with 1997-2010, along with increases for more translational research. Published outputs relating to pneumonia rose steadily from 1997 to 2013. Investment relative to mortality for pneumonia has increased, but it remains low compared to other respiratory infections and clear inequities remain. Analyses that measure investments in pneumonia can provide an insight into funding trends and research gaps.

    RESEARCH IN CONTEXT: Pneumonia continues to be a high-burden illness around the globe. This paper shows that although research funding is increasing in the UK (between 1997 and 2013), it remains poorly funded compared to other important respiratory infectious diseases such as tuberculosis and influenza. Publications about pneumonia have been steadily increasing over time, indicating continuing academic and clinical interest in the topic. Though global mortality of pneumonia is declining, it should still be an area of high priority for funders, policymakers and researchers.

    Matched MeSH terms: Influenza, Human/epidemiology
  2. Hashim S, Ayub ZN, Mohamed Z, Hasan H, Harun A, Ismail N, et al.
    J Travel Med, 2016 Feb;23(2):tav019.
    PMID: 26858268 DOI: 10.1093/jtm/tav019
    BACKGROUND: Respiratory illness continues to exert a burden on hajj pilgrims in Makkah. The purpose of this study is to determine the prevalence of respiratory illness and its associated factors among Malaysian hajj pilgrims in 2013 and to describe its preventive measures.

    METHODS: A cross-sectional study was conducted in Makkah and Malaysia during the 2013 hajj season. A self-administered proforma on social demographics, previous experience of hajj or umrah, smoking habits, co-morbid illness and practices of preventive measures against respiratory illness were obtained.

    RESULTS: A total of 468 proforma were analysed. The prevalence of the respiratory illness was 93.4% with a subset of 78.2% fulfilled the criteria for influenza-like illness (ILI). Most of them (77.8%) had a respiratory illness of <2 weeks duration. Approximately 61.8% were administered antibiotics but only 2.1% of them had been hospitalized. Most of them acquired the infection after a brief stay at Arafat (81.2%). Vaccination coverages for influenza virus and pneumococcal disease were quite high, 65.2% and 59.4%, respectively. For other preventive measures practices, only 31.8% of them practiced good hand hygiene, ∼82.9% of pilgrims used surgical face masks, N95 face masks, dry towels, wet towels or veils as their face masks. Nearly one-half of the respondents (44.4%) took vitamins as their food supplement. Malaysian hajj pilgrims with previous experience of hajj (OR 0.24; 95% CI 0.10-0.56) or umrah (OR 0.19; 95% CI 0.07-0.52) and those who have practiced good hand hygiene (OR 0.35; 95% CI 0.16-0.79) were found to be significantly associated with lower risk of having respiratory illness. Otherwise, pilgrims who had contact with those with respiratory illness (OR 2.61; 95% CI 1.12-6.09) was associated with higher risk.

    CONCLUSIONS: The prevalence of respiratory illness remains high among Malaysian hajj pilgrims despite having some practices of preventive measures. All preventive measures which include hand hygiene, wearing face masks and influenza vaccination must be practiced together as bundle of care to reduce respiratory illness effectively.

    Matched MeSH terms: Influenza, Human/epidemiology*
  3. Sam IC, Su YC, Chan YF, Nor'E SS, Hassan A, Jafar FL, et al.
    J Virol, 2015 Sep;89(18):9689-92.
    PMID: 26136576 DOI: 10.1128/JVI.00708-15
    Influenza B virus causes significant disease but remains understudied in tropical regions. We sequenced 72 influenza B viruses collected in Kuala Lumpur, Malaysia, from 1995 to 2008. The predominant circulating lineage (Victoria or Yamagata) changed every 1 to 3 years, and these shifts were associated with increased incidence of influenza B. We also found poor lineage matches with recommended influenza virus vaccine strains. While most influenza B virus lineages in Malaysia were short-lived, one circulated for 3 to 4 years.
    Matched MeSH terms: Influenza, Human/epidemiology
  4. Sunoto
    PMID: 7163834
    Diarrhoea up till now is still a major problem in Southeast Asia with high morbidity and mortality, particularly among children under 5 years of age, with the peak in children between 6 - 24 months. In Indonesia, in 1981, it was estimated that there are 60 million episodes with 300,000 - 500,000 deaths. In the Philippines, diarrhoea ranks as a second cause of morbidity (600 per 100,000 in 1974) and second cause of infant mortality (5 per 1,000 in 1974). In Thailand, in 1980, the morbidity rate was 524 per 100,000 and the mortality rate 14 per 100,000. In Malaysia, in 1976, diarrhoea was still ranking number 5 (3.1%) as a cause of total admission and number 9 (2.2%) as a cause of total deaths. In Singapore, diarrhoea still ranks number 3 as a cause of deaths (4% of total deaths). In Bangladesh, the overall attack rates imply a prevalence of 2.0% for the entire population, with the highest for under 5 groups i.e. 4.1%. The diarrhoea episode in rural population is 85.4%, 39% of them are children under 5. The most common enteropathogens found in all countries are rotavirus followed by Enterotoxigenic E. coli, Vibrio spp., Salmonella spp., Shigella spp. and Campylobacter. Malnutrition and decline of giving breast-feeding play an important role in causing high morbidity, besides socio-economic, socio-cultural and poor environmental sanitation.
    Matched MeSH terms: Influenza, Human/epidemiology
  5. Mohamad Isa MF, Tan JM, Abdul Aziz MF, Leong CL
    Med J Malaysia, 2018 12;73(6):405-406.
    PMID: 30647214
    Influenza outbreaks in tropical countries are rarely reported. This article reports four cases of influenza within a psychiatric ward of a tertiary hospital in Malaysia. These were patients with severe mental illness who were involuntarily admitted and did not show the classical triad of influenza-like-illness (ILI) at the beginning. However, severe respiratory complications developed requiring intubation. Referral and cooperation with the infectious disease team was initiated to help manage the outbreak while continuing psychiatric treatment. Incidences of influenza among hospitalised psychiatric patients should be treated seriously with immediate multidisciplinary approach to prevent severe unwanted complications.
    Matched MeSH terms: Influenza, Human/epidemiology*
  6. Rahim AA, Chacko TV
    Indian J Public Health, 2019 9 26;63(3):261-264.
    PMID: 31552860 DOI: 10.4103/ijph.IJPH_117_19
    Asia Pacific region has been witnessing numerous public health emergencies in recent years with the Nipah outbreak in North Kerala (2018), India, needs special mention. Threats posed and experiences gained have compelled health systems to draft frameworks nationally and internationally for preparedness, outbreak response, and recovery. Our failure to obtain comprehensive guiding frameworks for application in the Indian context for Ebola, Severe Acute Respiratory Syndrome, Influenza A (H1N1), and Nipah outbreaks led us to the search outside India for frameworks that have worked in the past. A thorough review of the WHO, Centers for Disease Control and Prevention, and Malaysian framework was done to identify explicit components and replicable objectives to the national context. In the absence of a specific framework, Nipah recovery and response experience that worked in Kerala outbreak (2018) was compared against novel H1N1 (2015) guidelines at national level. This article provides the groundwork and insights as a value addition toward an India-specific framework of action for response and recovery for Nipah outbreaks in future.
    Matched MeSH terms: Influenza, Human/epidemiology*
  7. Waicharoen S, Thawatsupha P, Chittaganpitch M, Maneewong P, Thanadachakul T, Sawanpanyalert P
    Jpn J Infect Dis, 2008 Jul;61(4):321-3.
    PMID: 18653981
    Determining the local circulating strain of influenza is essential to prevent and control epidemics. In the years 2004 and 2005, the National Influenza Center of Thailand received 3,854 and 3,834 specimens, respectively, from patients throughout the country, including submissions from 4 established influenza surveillance sentinel sites. In 2004, of 539 influenza-positive specimens, 461 were positive for influenza A and 78 were positive for influenza B by isolation. Influenza A subtyping revealed that 249, 197, and 15 isolates were H1N1, H3N2, and H5N1, respectively. In 2005, of 748 influenza-positive specimens, 492 were influenza A and the remaining 256 were influenza B. The results of influenza A subtyping indicated that 55, 437, and 5 isolates were H1N1, H3N2, and H5N1. All isolated strains of subtype H1N1 were A/New Caledonia/20/99-like. The isolated strains of H3N2 were A/Fujian/411/2002-like in the first half of the year 2004, while those in the latter half of 2004 gradually drifted to a mixture of A/Wellington/1/2004-like, A/California/7/2004-like, and A/Wisconsin/67/2005-like, and this mixture continued through the end of 2005. The influenza B strains were B/Sichuan/379/99-like, B/Hong Kong/330/2001-like, B/Shanghai/361/2002-like and B/Malaysia/2506/2004-like. The strains circulating in the years 2004 and 2005 were antigenically similar to the vaccine formulas recommended in the same period by WHO. Our results underscore that local influenza surveillance plays an important role in responding to epidemics and potential pandemics.
    Matched MeSH terms: Influenza, Human/epidemiology*
  8. Chastel C
    Med Mal Infect, 2004 Nov;34(11):499-505.
    PMID: 15620053
    Tropical Africa is not the only area where deadly viruses have recently emerged. In South-East Asia severe epidemics of dengue hemorrhagic fever started in 1954 and flu pandemics have originated from China such as the Asian flu (H2N2) in 1957, the Hong-Kong flu (H3N2) in 1968, and the Russian flu (H1N1) in 1977. However, it is especially during the last ten years that very dangerous viruses for mankind have repeatedly developed in Asia, with the occurrence of Alkhurma hemorrhagic fever in Saudi Arabia (1995), avian flu (H5N1) in Hong-Kong (1997), Nipah virus encephalitis in Malaysia (1998,) and, above all, the SARS pandemic fever from Southern China (2002). The evolution of these viral diseases was probably not directly affected by climate change. In fact, their emergential success may be better explained by the development of large industry poultry flocks increasing the risks of epizootics, dietary habits, economic and demographic constraints, and negligence in the surveillance and reporting of the first cases.
    Matched MeSH terms: Influenza, Human/epidemiology
  9. Daodu OB, Adebiyi AI, Oluwayelu DO
    Trop Biomed, 2019 Dec 01;36(4):1054-1060.
    PMID: 33597474
    Evidence of influenza A virus (IAV) infection in dogs, a major companion animal of humans, suggests the possibility that they may constitute a new source for transmission of novel influenza viruses to humans. The potential public health risk posed by this possibility of interspecies spread of IAV between dogs and humans necessitated surveillance for the virus in dogs and their human contacts. Sera from 239 asymptomatic pet and hunting dogs in Oyo state, Nigeria were screened for anti-IAV nucleoprotein antibodies using competitive enzyme-linked immunosorbent assay (ELISA) while haemagglutination inhibiting (HI) antibodies in the positive sera were detected using influenza virus H3 and H5 subtypespecific antigens. Suspensions prepared from 239 and 39 nasal swabs from dogs and human contacts, respectively were tested for presence of the highly conserved IAV matrix gene by reverse transcriptase-polymerase chain reaction (RT-PCR). Only 4 (1.7%) of the 239 sera tested were positive by the ELISA. The HI test confirmed the presence of H3 influenza virus subtype-specific antibodies in one (25.0%) of the 4 ELISA-positive sera with a titre of 1:128 while none was positive for H5 subtype-specific antibodies. All the nasal swabs assayed by RT-PCR were negative for IAV nucleic acid. The detection of IAV antibodies in pet and hunting dogs in this study, although at a low rate, suggests that these dogs could play a crucial role in the zoonotic transmission of influenza viruses especially considering the close interaction between them and their human contacts. Continuous surveillance for IAV among dog populations in Oyo State (and Nigeria) is therefore advocated to facilitate early detection of infection or emergence of novel influenza virus strains that could be potentially harmful to humans and or animals.
    Matched MeSH terms: Influenza, Human/epidemiology*
  10. Saenz AC, Assaad FA, Cockburn WC
    Lancet, 1969 Jan 11;1(7585):91-3.
    PMID: 4178014
    Matched MeSH terms: Influenza, Human/epidemiology*
  11. Tan DS, Omar M, Yap TC
    Med J Malaysia, 1979 Dec;34(2):159-62.
    PMID: 548720
    Matched MeSH terms: Influenza, Human/epidemiology
  12. Cheng KJG, Rivera AS, Lam HY, Ulitin AR, Nealon J, Dizon R, et al.
    PLoS One, 2020;15(6):e0234715.
    PMID: 32555618 DOI: 10.1371/journal.pone.0234715
    Influenza-associated mortality has not been quantified in the Philippines. Here, we constructed multiple negative binomial regression models to estimate the overall and age-specific excess mortality rates (EMRs) associated with influenza in the Philippines from 2006 to 2015. The regression analyses used all-cause mortality as the dependent variable and meteorological controls, time, influenza A and B positivity rates (lagged for up to two time periods), and annual and semiannual cyclical seasonality controls as independent variables. The regression models closely matched observed all-cause mortality. Influenza was estimated to account for a mean of 5,347 excess deaths per year (1.1% of annual all-cause deaths) in the Philippines, most of which (67.1%) occurred in adults aged ≥60 years. Influenza A accounted for 85.7% of all estimated excess influenza deaths. The annual estimated influenza-attributable EMR was 5.09 (95% CI: 2.20-5.09) per 100,000 individuals. The EMR was highest for individuals aged ≥60 years (44.63 [95% CI: 4.51-44.69] per 100,000), second highest for children aged less than 5 years (2.14 [95% CI: 0.44-2.19] per 100,000), and lowest for individuals aged 10 to 19 years (0.48 [95% CI: 0.10-0.50] per 100,000). Estimated numbers of excess influenza-associated deaths were considerably higher than the numbers of influenza deaths registered nationally. Our results suggest that influenza causes considerable mortality in the Philippines-to an extent far greater than observed from national statistics-especially among older adults and young children.
    Matched MeSH terms: Influenza, Human/epidemiology
  13. Du L, Pang Y
    Sci Rep, 2021 06 24;11(1):13275.
    PMID: 34168200 DOI: 10.1038/s41598-021-92484-6
    Influenza is an infectious disease that leads to an estimated 5 million cases of severe illness and 650,000 respiratory deaths worldwide each year. The early detection and prediction of influenza outbreaks are crucial for efficient resource planning to save patient's lives and healthcare costs. We propose a new data-driven methodology for influenza outbreak detection and prediction at very local levels. A doctor's diagnostic dataset of influenza-like illness from more than 3000 clinics in Malaysia is used in this study because these diagnostic data are reliable and can be captured promptly. A new region index (RI) of the influenza outbreak is proposed based on the diagnostic dataset. By analysing the anomalies in the weekly RI value, potential outbreaks are identified using statistical methods. An ensemble learning method is developed to predict potential influenza outbreaks. Cross-validation is conducted to optimize the hyperparameters of the ensemble model. A testing data set is used to provide an unbiased evaluation of the model. The proposed methodology is shown to be sensitive and accurate at influenza outbreak prediction, with average of 75% recall, 74% precision, and 83% accuracy scores across five regions in Malaysia. The results are also validated by Google Flu Trends data, news reports, and surveillance data released by World Health Organization.
    Matched MeSH terms: Influenza, Human/epidemiology
  14. Arkema JM, Meijer A, Meerhoff TJ, Van Der Velden J, Paget WJ, European Influenza Surveillance Scheme (EISS)
    Euro Surveill, 2008 Aug 21;13(34).
    PMID: 18761888
    Influenza surveillance in Europe is based on influenza surveillance networks that cooperate and share information through the European Influenza Surveillance Scheme (EISS). EISS collected clinical and virological data on influenza in 33 countries during the 2006-2007 winter. Influenza activity started around 1 January and first occurred in Greece, Scotland and Spain. It then moved gradually across Europe from south to north and lasted until the end of March. In 29 out of 33 countries, the consultation rates for influenza-like-illness or acute respiratory infections in the winter of 2006-2007 were similar or somewhat higher than in the 2005-2006 winter. The highest consultation rates for influenzal ike-illness were generally observed among children aged 0-4 years and 5-14 years. The predominant virus strain was influenza A (97% of total detections) of the H3 subtype (93% of H-subtyped A viruses; 7% were A(H1)). The influenza A(H3) and A(H1) viruses were similar to the vaccine reference strains for the 2006-2007 season, A/Wisconsin/67/2005 (H3N2) and A/New Caledonia/20/99 (H1N1) respectively. The majority of the influenza B viruses were similar to the reference strain B/Malaysia/2506/2004, included in the 2006-2007 vaccine. In conclusion, the 2006-2007 influenza season in Europe was characterised by moderate clinical activity, a south to north spread pattern across Europe, and a dominance of influenza A(H3). Overall there was a good match between the vaccine virus strains and the reported virus strains.
    Matched MeSH terms: Influenza, Human/epidemiology*
  15. Joob B, Wiwanitkit V
    Singapore Med J, 2016 Oct;57(10):586.
    PMID: 27779280 DOI: 10.11622/smedj.2016168
    Matched MeSH terms: Influenza, Human/epidemiology*
  16. Saha S, Chadha M, Al Mamun A, Rahman M, Sturm-Ramirez K, Chittaganpitch M, et al.
    Bull World Health Organ, 2014 May 01;92(5):318-30.
    PMID: 24839321 DOI: 10.2471/BLT.13.124412
    OBJECTIVE: To characterize influenza seasonality and identify the best time of the year for vaccination against influenza in tropical and subtropical countries of southern and south-eastern Asia that lie north of the equator.

    METHODS: Weekly influenza surveillance data for 2006 to 2011 were obtained from Bangladesh, Cambodia, India, Indonesia, the Lao People's Democratic Republic, Malaysia, the Philippines, Singapore, Thailand and Viet Nam. Weekly rates of influenza activity were based on the percentage of all nasopharyngeal samples collected during the year that tested positive for influenza virus or viral nucleic acid on any given week. Monthly positivity rates were then calculated to define annual peaks of influenza activity in each country and across countries.

    FINDINGS: Influenza activity peaked between June/July and October in seven countries, three of which showed a second peak in December to February. Countries closer to the equator had year-round circulation without discrete peaks. Viral types and subtypes varied from year to year but not across countries in a given year. The cumulative proportion of specimens that tested positive from June to November was > 60% in Bangladesh, Cambodia, India, the Lao People's Democratic Republic, the Philippines, Thailand and Viet Nam. Thus, these tropical and subtropical countries exhibited earlier influenza activity peaks than temperate climate countries north of the equator.

    CONCLUSION: Most southern and south-eastern Asian countries lying north of the equator should consider vaccinating against influenza from April to June; countries near the equator without a distinct peak in influenza activity can base vaccination timing on local factors.

    Matched MeSH terms: Influenza, Human/epidemiology*
  17. Muhammad Ismail HI, Tan KK, Lee YL, Pau WS, Razali KA, Mohamed T, et al.
    Emerg Infect Dis, 2011 Apr;17(4):708-10.
    PMID: 21470467 DOI: 10.3201/eid1704.101212
    To determine effects of pandemic (H1N1) 2009 on children in the tropics, we examined characteristics of children hospitalized for this disease in Malaysia. Of 1,362 children, 51 (3.7%) died, 46 of whom were in an intensive care unit. Although disease was usually mild, ≥ 1 concurrent conditions were associated with higher death rates.
    Matched MeSH terms: Influenza, Human/epidemiology*
  18. Mehrbod P, Omar AR, Hair-Bejo M, Haghani A, Ideris A
    Biomed Res Int, 2014;2014:872370.
    PMID: 25478576 DOI: 10.1155/2014/872370
    The influenza virus (IV) is known to be a resistant virus with frequent mutations, causing severe respiratory diseases in the upper respiratory system. Public health concerns about clinical efficacy of all conventional drugs are ambiguous; therefore, finding additional therapeutic agents is critical to prevent and control influenza outbreaks. Influenza is associated with the induction of proinflammatory cytokines. Scientists have reported that anti-inflammatory drugs, with pleiotropic effects, reduce the burden of severe influenza diseases. Therefore, statins, which are cardioprotective drugs with anti-inflammatory and immunomodulatory effects, may help patients suffering from influenza virus (IV). This review delineates the potential use of statins as an alternative therapy in treating influenza related illness.
    Matched MeSH terms: Influenza, Human/epidemiology
  19. Hasan H, Deris ZZ, Sulaiman SA, Abdul Wahab MS, Naing NN, Ab Rahman Z, et al.
    J Immigr Minor Health, 2015 Aug;17(4):1114-9.
    PMID: 24946936 DOI: 10.1007/s10903-014-0059-y
    Respiratory illness were a major problem and caused high hospital admission during hajj seasons. One of the contributing cause to this illness is infection. Various measures had been implemented to reduce respiratory infections. The aim on the study is to determine the effect of influenza vaccination against acute respiratory illness among Malaysian Hajj pilgrims. This is an observational cohort study. Influenza vaccination was given to pilgrims at least 2 weeks prior to departure. The occurrence of symptoms for respiratory illness such as cough, fever, sore throat and runny nose was monitored daily for 6 weeks during pilgrimage using a health diary. A total of 65 vaccinated hajj pilgrims and 41 controls were analyzed. There was no significant difference in pattern of occurrence of symptoms of respiratory illness by duration of pilgrimage as well as the number of symptoms between both groups. Hajj pilgrims have frequent respiratory symptoms. We were unable to document benefit from influenza vaccination, but our study was limited by a small sample size and lack of laboratory testing for influenza.
    Matched MeSH terms: Influenza, Human/epidemiology
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