1
|
Akbar SMF, Khan S, Mahtab M, Mahtab MA, Yahiro T, Arafat SM, Sarker MAS, Podder PK, Hossain MS, Khandokar FA, Hassan MR, Rahim MA, Ashraf MA, Rony RS, Nishizono A. Recent Dengue Infection in Bangladesh: A Seasonal Endemic Progressing to Year-long Serious Health Concern. Euroasian J Hepatogastroenterol 2023; 13:145-151. [PMID: 38222961 PMCID: PMC10785144 DOI: 10.5005/jp-journals-10018-1408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/04/2023] [Indexed: 01/16/2024] Open
Abstract
Dengue represents one of the most dangerous mosquito-borne viral diseases. Although the disease has been prevalent around the globe over the centuries, recent outbreaks of dengue have devasted the healthcare delivery system of many countries. Being a global infection, dengue virus (DENV) is endemically present mainly in Latin America and Caribbean countries as well as countries in South Asia. The recent outbreak of DENV infection has indicated an exceptional outbreak of DENV in some countries in South Asia. There has been a serious endemic of DENV during 2019. After a heterogeneous pause, another severe outbreak of DENV was reported in some Asian countries in 2023. Among the Asian countries, Bangladesh has reported an acute upsurge of DENV infection in 2023 with record numbers of fatalities. However, this pattern of DENV has not been detected in neighbors of Bangladesh, such as India or other countries in Southeast Asia. This provides an emergent task of dissecting the present DENV infection in Bangladesh from different angles to get insights for future containment of the DENV infection, not only in Bangladesh but also in other DENV endemic areas or DENV-native areas. How to cite this article Akbar SMF, Khan S, Mahtab M, et al. Recent Dengue Infection in Bangladesh: A Seasonal Endemic Progressing to Year-long Serious Health Concern. Euroasian J Hepato-Gastroenterol 2023;13(2):145-151.
Collapse
Affiliation(s)
- Sheikh Mohammad Fazle Akbar
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine; Research Center for Global and Local Infectious Diseases, Faculty of Medicine, Oita University, Oita, Japan; Miyakawa Memorial Research Foundation, Tokyo, Japan
| | - Sakirul Khan
- Research Center for Global and Local Infectious Diseases; Department of Microbiology, Faculty of Medicine, Oita University, Oita, Japan
| | - Musarrat Mahtab
- Department of Biochemistry and Biotechnology, North South University, Dhaka, Bangladesh
| | - Mamun Al Mahtab
- Interventional Hepatology Division, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Takaaki Yahiro
- Research Center for Global and Local Infectious Diseases; Department of Microbiology; Department of Advanced Medical Sciences, Faculty of Medicine, Oita University, Oita, Japan
| | - Shohael Mahmud Arafat
- Department of Internal Medicine, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | | | | | | | | | | | - Md Abdur Rahim
- Department of Hepatology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
| | - Muhammad Ali Ashraf
- Acute Medicine Unit, Sir Salimullah Medical, College Mitford Hospital, Dhaka, Bangladesh
| | - Rajib Saha Rony
- Department of Hepatology, Sir Salimullah Medical College, Dhaka, Bangladesh
| | - Akira Nishizono
- Research Center for Global and Local Infectious Diseases; Department of Microbiology, Faculty of Medicine, Oita University, Oita, Japan
| |
Collapse
|
2
|
Laboratory Findings in Patients with Probable Dengue Diagnosis from an Endemic Area in Colombia in 2018. Viruses 2021; 13:v13071401. [PMID: 34372606 PMCID: PMC8310201 DOI: 10.3390/v13071401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/15/2021] [Accepted: 07/15/2021] [Indexed: 11/17/2022] Open
Abstract
As demonstrated with the novel coronavirus pandemic, rapid and accurate diagnosis is key to determine the clinical characteristic of a disease and to improve vaccine development. Once the infected person is identified, hematological findings may be used to predict disease outcome and offer the correct treatment. Rapid and accurate diagnosis and clinical parameters are pivotal to track infections during clinical trials and set protection status. This is also applicable for re-emerging diseases like dengue fever, which causes outbreaks in Asia and Latin America every 4 to 5 years. Some areas in the US are also endemic for the transmission of dengue virus (DENV), the causal agent of dengue fever. However, significant number of DENV infections in rural areas are diagnosed solely by clinical and hematological findings because of the lack of availability of ELISA or PCR-based tests or the infrastructure to implement them in the near future. Rapid diagnostic tests (RDT) are a less sensitive, yet they represent a timely way of detecting DENV infections. The purpose of this study was to determine whether there is an association between hematological findings and the probability for an NS1-based DENV RDT to detect the DENV NS1 antigen. We also aimed to describe the hematological parameters that are associated with the diagnosis through each test.
Collapse
|
3
|
Cui J, Gao L, Chen S, Huang Z, Wang X. Electrochemical voltammetric behaviors of synthetic dengue virus RNAs at ITO sensing electrode. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
4
|
Nguyen NM, Duong BT, Azam M, Phuong TT, Park H, Thuy PTB, Yeo SJ. Diagnostic Performance of Dengue Virus Envelope Domain III in Acute Dengue Infection. Int J Mol Sci 2019; 20:ijms20143464. [PMID: 31311082 PMCID: PMC6679088 DOI: 10.3390/ijms20143464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/05/2019] [Accepted: 07/08/2019] [Indexed: 02/06/2023] Open
Abstract
Dengue, one of the most prevalent illnesses caused by dengue viruses that are members of the genus Flavivirus, is a significant global health problem. However, similar clinical symptoms and high antigenic homologies with other Flaviviruses in the endemic area pose difficulties for differential diagnosis of dengue from other arbovirus infections. Here, we investigated four types of recombinant envelope protein domain III (DV-rED III) derived from four dengue virus (DENV) serotypes for diagnostic potential in detecting IgM in acute phase (mainly 2–3 days after onset of fever). Each independent DV-1, -3, and -4-rED III-ELISA showed less than 60% sensitivity, but the combined results of DV-1, -3, and -4-rED III-ELISA led to sensitivity of 81.82% (18/22) (95% CI, 59.72 to 94.81) and 100% specificity (46/46) (95% CI, 92.29 to 100.00) as each antigen compensated the other antigen-derived negative result. In conclusion, the independent combination of data derived from each recombinant antigen (DV1-, DV3-, and DV4-rED III) showed comparable efficacy for the detection of IgM in patients with acute-phase dengue infection.
Collapse
Affiliation(s)
- Ngoc Minh Nguyen
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan 570-749, Korea
| | - Bao Tuan Duong
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan 570-749, Korea
| | - Mudsser Azam
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan 570-749, Korea
| | | | - Hyun Park
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan 570-749, Korea
| | - Phung Thi Bich Thuy
- Department of Research of Biomolecular for Infectious Disease, National Children's Hospital, Hanoi 100000, Vietnam.
| | - Seon-Ju Yeo
- Zoonosis Research Center, Department of Infection Biology, School of Medicine, Wonkwang University, Iksan 570-749, Korea.
| |
Collapse
|
5
|
Singh PK, Guest JM, Kanwar M, Boss J, Gao N, Juzych MS, Abrams GW, Yu FS, Kumar A. Zika virus infects cells lining the blood-retinal barrier and causes chorioretinal atrophy in mouse eyes. JCI Insight 2017; 2:e92340. [PMID: 28239662 DOI: 10.1172/jci.insight.92340] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Zika virus (ZIKV) is an important pathogen that causes not only neurologic, but also ocular, abnormalities. Thus, it is imperative that models to study ZIKV pathogenesis in the eye are developed to identify potential targets for interventions. Here, we studied ZIKV interactions with human retinal cells and evaluated ZIKV's pathobiology in mouse eyes. We showed that cells lining the blood-retinal barrier (BRB), the retinal endothelium, and retinal pigment epithelium (RPE) were highly permissive and susceptible to ZIKV-induced cell death. Direct inoculation of ZIKV in eyes of adult C57BL/6 and IFN-stimulated gene 15 (ISG15) KO mice caused chorioretinal atrophy with RPE mottling, a common ocular manifestation of congenital ZIKV infection in humans. This response was associated with induced expression of multiple inflammatory and antiviral (IFNs) response genes in the infected mouse retina. Interestingly, ISG15 KO eyes exhibited severe chorioretinitis, which coincided with increased retinal cell death and higher ZIKV replication. Collectively, our study provides the first evidence to our knowledge that ZIKV causes retinal lesions and infects the cells lining the BRB and that ISG15 plays a role in retinal innate defense against ZIKV infection. Our mouse model can be used to study mechanisms underlying ZIKV-induced chorioretinitis and to gauge ocular antiviral therapies.
Collapse
Affiliation(s)
- Pawan Kumar Singh
- Kresge Eye Institute, Department of Ophthalmology.,Department of Anatomy and Cell Biology, and
| | | | - Mamta Kanwar
- Kresge Eye Institute, Department of Ophthalmology
| | - Joseph Boss
- Kresge Eye Institute, Department of Ophthalmology
| | - Nan Gao
- Kresge Eye Institute, Department of Ophthalmology
| | | | | | - Fu-Shin Yu
- Kresge Eye Institute, Department of Ophthalmology.,Department of Anatomy and Cell Biology, and
| | - Ashok Kumar
- Kresge Eye Institute, Department of Ophthalmology.,Department of Anatomy and Cell Biology, and.,Department of Microbiology, Immunology, and Biochemistry, Wayne State University School of Medicine, Detroit, Michigan, USA
| |
Collapse
|
6
|
Chatchen S, Sabchareon A, Sirivichayakul C. Serodiagnosis of asymptomatic dengue infection. ASIAN PAC J TROP MED 2016; 10:11-14. [PMID: 28107858 DOI: 10.1016/j.apjtm.2016.12.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 11/20/2016] [Accepted: 12/02/2016] [Indexed: 11/16/2022] Open
Abstract
Dengue virus (DENV) is a mosquito-transmitted virus that is expanding across the world. The incidence of dengue infection, especially severe disease, has been increasing. DENV consist of 4 serotypes of single stranded RNA viruses (D1-D4) in the genus Flavivirus, family Flaviviridae. Majority of dengue infections are asymptomatic cases, which cause difficulty in disease control and are important in dengue surveillance. There is still no gold standard to diagnose asymptomatic dengue infection. Plaque reduction neutralization test (PRNT) has been developed for many purposes such as immunological study, clinical study, vaccine trial and is currently the most sensitive and specific method for serological surveillance. However, PRNT shows some degree of cross reaction among different dengue serotypes especially secondary dengue infection cases and to other flaviviruses. Moreover, various modification since the beginning make PRNT lack of inter-laboratory standardization which is an important issue. This paper discusses the important of asymptomatic dengue infection and its diagnostic method.
Collapse
Affiliation(s)
- Supawat Chatchen
- Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Thailand.
| | - Arunee Sabchareon
- Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Thailand
| | - Chukiat Sirivichayakul
- Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Thailand
| |
Collapse
|
7
|
Afreen N, Naqvi IH, Broor S, Ahmed A, Parveen S. Phylogenetic and Molecular Clock Analysis of Dengue Serotype 1 and 3 from New Delhi, India. PLoS One 2015; 10:e0141628. [PMID: 26536458 PMCID: PMC4633233 DOI: 10.1371/journal.pone.0141628] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/01/2015] [Indexed: 11/21/2022] Open
Abstract
Dengue fever is the most prevalent arboviral disease in the tropical and sub-tropical regions of the world. The present report describes molecular detection and serotyping of dengue viruses in acute phase blood samples collected from New Delhi, India. Phylogenetic and molecular clock analysis of dengue virus serotype 1 and 3 strains were also investigated. Dengue virus infection was detected in 68.87% out of 604 samples tested by RT-PCR between 2011 & 2014. Dengue serotype 1 was detected in 25.48% samples, dengue serotype 2 in 79.56% samples and dengue serotype 3 in 11.29% samples. Dengue serotype 4 was not detected. Co-infection by more than one dengue serotype was detected in 18.26% samples. Envelope gene of 29 DENV-1 and 14 DENV-3 strains were sequenced in the study. All the DENV-1 strains grouped with the American African genotype. All DENV-3 strains were found to belong to Genotype III. Nucleotide substitution rates of dengue 1 and 3 viruses were determined in the study. Time to the most recent common ancestor (TMRCA) of dengue 1 viruses was determined to be 132 years. TMRCA of DENV-3 viruses was estimated to be 149 years. Bayesian skyline plots were constructed for Indian DENV-1 and 3 strains which showed a decrease in population size since 2005 in case of DENV- 1 strains while no change was observed in recent years in case of DENV-3 strains. The study also revealed a change in the dominating serotype in Delhi, India in recent years. The study will be helpful in formulating control strategies for the outbreaks. In addition, it will also assist in tracking the movement and evolution of this emerging virus.
Collapse
Affiliation(s)
- Nazia Afreen
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Irshad H. Naqvi
- Dr. M.A. Ansari Health Centre, Jamia Millia Islamia, New Delhi, India
| | - Shobha Broor
- Department of Microbiology, Faculty of Medicine and Health Science, Shree Guru Gobind Singh Tricentenary University, Gurgaon, Haryana, India
| | - Anwar Ahmed
- Protein Research Chair, Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Shama Parveen
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| |
Collapse
|
8
|
Diagnostic Options and Challenges for Dengue and Chikungunya Viruses. BIOMED RESEARCH INTERNATIONAL 2015; 2015:834371. [PMID: 26509163 PMCID: PMC4609775 DOI: 10.1155/2015/834371] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 06/23/2015] [Accepted: 06/25/2015] [Indexed: 01/16/2023]
Abstract
Dengue virus (DENV) and Chikungunya virus (CHIKV) are arboviruses that share the same Aedes mosquito vectors and thus overlap in their endemic areas. These two viruses also cause similar clinical presentations, especially in the initial stages of infection, with neither virus possessing any specific distinguishing clinical features. Because the outcomes and management strategies for these two viruses are vastly different, early and accurate diagnosis is imperative. Diagnosis is also important for surveillance, outbreak control, and research related to vaccine and drug development. Available diagnostic tests are aimed at detection of the virus, its antigenic components, or the host immune antibody response. In this review, we describe the recent progress and continued challenges related to the diagnosis of DENV and CHIKV infections.
Collapse
|
9
|
Ferreira S, Conceição V, Gouveia N, Santos G, Santos R, Lira A, Cavalcanti S, Sarmento V, Nunes R. An environmentally safe larvicide against Aedes aegypti based on in situ gelling nanostructured surfactant systems containing an essential oil. J Colloid Interface Sci 2015; 456:190-6. [DOI: 10.1016/j.jcis.2015.06.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 06/06/2015] [Accepted: 06/08/2015] [Indexed: 12/13/2022]
|
10
|
Bhat VG, Chavan P, Ojha S, Nair PK. Challenges in the Laboratory Diagnosis and Management of Dengue Infections. Open Microbiol J 2015; 9:33-7. [PMID: 26668659 PMCID: PMC4676044 DOI: 10.2174/1874285801509010033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 06/01/2015] [Accepted: 06/01/2015] [Indexed: 02/02/2023] Open
Abstract
Dengue fever is considered the most important arthropod-borne viral diseases in terms of morbidity and mortality. An accurate and efficient diagnosis of dengue plays an important role in case confirmation. The virus may be isolated during the viremic phase (within day 5 of illness), from serum, plasma and peripheral blood mononuclear cells. Enzyme linked immunoassay (ELISA) has demonstrated the presence of high levels of dengue NS1 antigen and tests may be performed by enzyme-immunoassays (EIAs) or immune-chromatographic (ICT) methods. These assays are specific with respect to different flaviviruses. Conventional and real time RT PCR, nested PCR, multiplex PCR and Nucleic acid sequence based amplification (NASBA) have been described as sensitive and relatively rapid method of detecting the virus during the early viremic phase. Other tests used include assay of anti-dengue specific IgM and IgG ELISA. Currently no curative treatment in terms of anti-viral drugs is available for dengue and patients are managed with rest and aggressive supportive therapy. Management may be done at home or in the hospital depending on the severity of the illness. Hospital management includes fluid therapy, blood component transfusion and other modalities of treatments like steroids, recombinant factor VII and management of complications. Various vaccines are in trial stages and may become available in the near future.
Collapse
Affiliation(s)
- Vivek G Bhat
- Department of Microbiology, ACTREC -Tata Memorial Center, Navi Mumbai- 410210
| | - Preeti Chavan
- Composite Laboratory, ACTREC -Tata Memorial Center, Navi Mumbai- 410210
| | - Shashank Ojha
- Department of Transfusion Medicine, ACTREC -Tata Memorial Center, Navi Mumbai- 410210
| | - Pravin K Nair
- Department of Microbiology, Holy Spirit Hospital, Andheri (E), Mumbai 400093, India
| |
Collapse
|
11
|
Meng F, Badierah RA, Almehdar HA, Redwan EM, Kurgan L, Uversky VN. Unstructural biology of the dengue virus proteins. FEBS J 2015; 282:3368-94. [DOI: 10.1111/febs.13349] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 06/01/2015] [Accepted: 06/15/2015] [Indexed: 01/02/2023]
Affiliation(s)
- Fanchi Meng
- Department of Electrical and Computer Engineering; University of Alberta; Edmonton Alberta Canada
| | - Reaid A. Badierah
- Biological Department; Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
| | - Hussein A. Almehdar
- Biological Department; Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
| | - Elrashdy M. Redwan
- Biological Department; Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
- Therapeutic and Protective Proteins Laboratory; Protein Research Department; Genetic Engineering and Biotechnology Research Institute; City for Scientific Research and Technology Applications; New Borg El-Arab Alexandria Egypt
| | - Lukasz Kurgan
- Department of Electrical and Computer Engineering; University of Alberta; Edmonton Alberta Canada
| | - Vladimir N. Uversky
- Biological Department; Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
- Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute; Morsani College of Medicine; University of South Florida; Tampa FL USA
- Laboratory of Structural Dynamics, Stability and Folding of Proteins; Institute of Cytology; Russian Academy of Sciences; St Petersburg Russia
| |
Collapse
|
12
|
|
13
|
Waterman SH, Margolis HS, Sejvar JJ. Surveillance for dengue and dengue-associated neurologic syndromes in the United States. Am J Trop Med Hyg 2014; 92:996-8. [PMID: 25371183 DOI: 10.4269/ajtmh.14-0016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 09/21/2014] [Indexed: 02/05/2023] Open
Abstract
Autochthonous dengue virus transmission has occurred in the continental United States with increased frequency during the last decade; the principal vector, Aedes aegypti, has expanded its geographic distribution in the southern United States. Dengue, a potentially fatal arboviral disease, is underreported, and US clinicians encountering patients with acute febrile illness consistent with dengue are likely to not be fully familiar with dengue diagnosis and management. Recently, investigators suggested that an outbreak of dengue likely occurred in Houston during 2003 based on retrospective laboratory testing of hospitalized cases with encephalitis and aseptic meningitis. Although certain aspects of the Houston testing results and argument for local transmission are doubtful, the report highlights the importance of prospective surveillance for dengue in Aedes-infested areas of the United States, the need for clinical training on dengue and its severe manifestations, and the need for laboratory testing in domestic patients presenting with febrile neurologic illness in these regions to include dengue.
Collapse
Affiliation(s)
- Stephen H Waterman
- United States-Mexico Unit, Division of Global Migration and Quarantine, US Centers for Disease Control and Prevention, San Diego, California; Dengue Branch, Division of Vector-Borne Diseases, US Centers for Disease Control and Prevention, San Juan, Puerto Rico; Division of High-Consequence Pathogens and Pathology, US Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Harold S Margolis
- United States-Mexico Unit, Division of Global Migration and Quarantine, US Centers for Disease Control and Prevention, San Diego, California; Dengue Branch, Division of Vector-Borne Diseases, US Centers for Disease Control and Prevention, San Juan, Puerto Rico; Division of High-Consequence Pathogens and Pathology, US Centers for Disease Control and Prevention, Atlanta, Georgia
| | - James J Sejvar
- United States-Mexico Unit, Division of Global Migration and Quarantine, US Centers for Disease Control and Prevention, San Diego, California; Dengue Branch, Division of Vector-Borne Diseases, US Centers for Disease Control and Prevention, San Juan, Puerto Rico; Division of High-Consequence Pathogens and Pathology, US Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
14
|
Behandlung von auf Fernreisen erworbenen Erkrankungen. Internist (Berl) 2014; 55:1100, 1012. [DOI: 10.1007/s00108-014-3546-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
15
|
Ng JKW, Zhang SL, Tan HC, Yan B, Maria Martinez Gomez J, Tan WY, Lam JH, Tan GKX, Ooi EE, Alonso S. First experimental in vivo model of enhanced dengue disease severity through maternally acquired heterotypic dengue antibodies. PLoS Pathog 2014; 10:e1004031. [PMID: 24699622 PMCID: PMC3974839 DOI: 10.1371/journal.ppat.1004031] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 02/11/2014] [Indexed: 11/18/2022] Open
Abstract
Dengue (DEN) represents the most serious arthropod-borne viral disease. DEN clinical manifestations range from mild febrile illness to life-threatening hemorrhage and vascular leakage. Early epidemiological observations reported that infants born to DEN-immune mothers were at greater risk to develop the severe forms of the disease upon infection with any serotype of dengue virus (DENV). From these observations emerged the hypothesis of antibody-dependent enhancement (ADE) of disease severity, whereby maternally acquired anti-DENV antibodies cross-react but fail to neutralize DENV particles, resulting in higher viremia that correlates with increased disease severity. Although in vitro and in vivo experimental set ups have indirectly supported the ADE hypothesis, direct experimental evidence has been missing. Furthermore, a recent epidemiological study has challenged the influence of maternal antibodies in disease outcome. Here we have developed a mouse model of ADE where DENV2 infection of young mice born to DENV1-immune mothers led to earlier death which correlated with higher viremia and increased vascular leakage compared to DENV2-infected mice born to dengue naïve mothers. In this ADE model we demonstrated the role of TNF-α in DEN-induced vascular leakage. Furthermore, upon infection with an attenuated DENV2 mutant strain, mice born to DENV1-immune mothers developed lethal disease accompanied by vascular leakage whereas infected mice born to dengue naïve mothers did no display any clinical manifestation. In vitro ELISA and ADE assays confirmed the cross-reactive and enhancing properties towards DENV2 of the serum from mice born to DENV1-immune mothers. Lastly, age-dependent susceptibility to disease enhancement was observed in mice born to DENV1-immune mothers, thus reproducing epidemiological observations. Overall, this work provides direct in vivo demonstration of the role of maternally acquired heterotypic dengue antibodies in the enhancement of dengue disease severity and offers a unique opportunity to further decipher the mechanisms involved.
Collapse
Affiliation(s)
- Jowin Kai Wei Ng
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
| | | | - Hwee Cheng Tan
- Progamme in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore
| | - Benedict Yan
- Department of Pathology, National University Health System and National University of Singapore, Singapore
| | - Julia Maria Martinez Gomez
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
| | - Wei Yu Tan
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
| | - Jian Hang Lam
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
| | - Grace Kai Xin Tan
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
| | - Eng Eong Ooi
- Progamme in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore
| | - Sylvie Alonso
- Department of Microbiology, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- Immunology Programme, Yong Loo Lin School of Medicine, Life Sciences Institute, National University of Singapore, Singapore
- * E-mail:
| |
Collapse
|
16
|
Gan VC, Tan LK, Lye DC, Pok KY, Mok SQ, Chua RCR, Leo YS, Ng LC. Diagnosing dengue at the point-of-care: utility of a rapid combined diagnostic kit in Singapore. PLoS One 2014; 9:e90037. [PMID: 24646519 PMCID: PMC3960091 DOI: 10.1371/journal.pone.0090037] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 01/29/2014] [Indexed: 11/19/2022] Open
Abstract
WHO recommendations for dengue diagnosis require laboratory facilities. Antibody-based rapid diagnostic tests (RDTs) have performed poorly, and clinical diagnosis remains the mainstay in dengue-endemic countries. We evaluated a combination antigen-antibody RDT for point-of-care testing in a high-prevalence setting. In this prospective cohort study, adults were enrolled from a tertiary infectious disease centre for evaluation of undifferentiated febrile illness from October 2011 to May 2012. SD Bioline Dengue Duo was evaluated at point-of-care against a WHO-based reference standard of viral isolation, RT-PCR, NS1-, IgM-, and IgG-ELISA. 246 adults were enrolled (median age 34 years, range 18–69), of which 197 could be confirmed definitively as either dengue or non-dengue. DENV-2 was the predominant serotype (79.5%) and the ratio of primary to secondary cases was 1∶1.1. There were no test failures and minimal interobserver variation with a Fleiss’ kappa of 0.983 (95% CI 0.827–1.00). Overall sensitivity and specificity were 93.9% (95% CI 88.8–96.8%) and 92.0% (95% CI 81.2–96.9%) respectively. Using WHO clinical criteria alone for diagnosis had similar sensitivities (95.9%, 95% CI 91.4–98.1%) and lower specificities (20.0%, 95% CI 11.2–33.0%). No significant difference in performance was found when testing early versus late presenters, primary versus secondary cases, or DENV-1 versus DENV-2 infections. The use of a combination RDT fulfills WHO ASSURED criteria for point-of-care testing and can enhance dengue diagnosis in an endemic setting. This has the potential to markedly improve clinical management of dengue in the field.
Collapse
Affiliation(s)
- Victor C. Gan
- Institute of Infectious Disease and Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore
- * E-mail:
| | - Li-Kiang Tan
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - David C. Lye
- Institute of Infectious Disease and Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Kwoon-Yong Pok
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
| | - Shi-Qi Mok
- Institute of Infectious Disease and Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore
| | | | - Yee-Sin Leo
- Institute of Infectious Disease and Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lee-Ching Ng
- Environmental Health Institute, National Environment Agency, Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| |
Collapse
|
17
|
Nazareth T, Teodósio R, Porto G, Gonçalves L, Seixas G, Silva AC, Sousa CA. Strengthening the perception-assessment tools for dengue prevention: a cross-sectional survey in a temperate region (Madeira, Portugal). BMC Public Health 2014; 14:39. [PMID: 24428823 PMCID: PMC3905660 DOI: 10.1186/1471-2458-14-39] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 12/17/2013] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Community participation is mandatory in the prevention of Dengue outbreaks. Taking public views into account is crucial to guide more effective planning and quicker community participation in preventing campaigns. This study aims to assess community perceptions of Madeira population in order to explore their involvement in the A. aegypti's control and reinforce health-educational planning. Due to the lack of accurate methodologies for measuring perception, a new tool to assess the community's perceptions was built. METHODS A cross-sectional survey was performed in the Island's aegypti-infested area, exploring residents' perceptions regarding most critical community behaviour: aegypti-source reduction and their domestic aegypti-breeding sites. A novel tool defining five essential topics which underlie the source reduction's awareness and accession was built, herein called Essential-Perception (EP) analysis. RESULTS Of 1276 individuals, 1182 completed the questionnaire (92 · 6%). EP-Score analysis revealed that community's perceptions were scarce, inconsistent and possibly incorrect. Most of the population (99 · 6%) did not completely understood the five essential topics explored. An average of 54 · 2% of residents only partially understood each essential topic, revealing inconsistencies in their understanding. Each resident apparently believed in an average of four false assumptions/myths. Significant association (p<0.001) was found between both the EP-Score level and the domestic presence of breeding sites, supporting the validity of this EP-analysis. Aedes aegypti's breeding sites, consisting of décor/leisure containers, presented an atypical pattern of infestation comparing with dengue prone regions. CONCLUSIONS The studied population was not prepared for being fully engaged in dengue prevention. Evidences suggest that EP-methodology was efficient and accurate in assessing the community perception and its compliance to practices. Moreover, it suggested a list of myths that could persist in the community. This is the first study reporting an aegypti-entomological pattern and community's perception in a developed dengue-prone region. Tailored messages considering findings of this study are recommended to be used in future campaigns in order to more effectively impact the community perception and behaviour.
Collapse
Affiliation(s)
- Teresa Nazareth
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Porto, Portugal
- Unidade Clínica Tropical, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Rosa Teodósio
- Unidade Clínica Tropical, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Malária e Doenças Tropicais, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Graça Porto
- GABBA Doctoral Program, ICBAS, Abel Salazar Institute for the Biomedical Sciences, University of Porto, Porto, Portugal
- IBMC, Institute for Molecular and Cellular Biology, Porto, Portugal
| | - Luzia Gonçalves
- Unidade de Saúde Pública e Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Estatística e Aplicações da Universidade de Lisboa (CEAUL), Universidade de Lisboa, Lisboa, Portugal
| | - Gonçalo Seixas
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Ana Clara Silva
- Departamento de Saúde, Planeamento e Administração Geral, Instituto de Administração da Saúde e Assuntos Sociais, IP-RAM, Funchal, Portugal
| | - Carla Alexandra Sousa
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Unidade de Parasitologia e Microbiologia Médica, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| |
Collapse
|
18
|
Hokit G, Alvey S, Geiger JMO, Johnson GD, Rolston MG, Kinsey DT, Tall Bear N. Using undergraduate researchers to build vector and West Nile virus surveillance capacity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2013; 10:3192-202. [PMID: 23912200 PMCID: PMC3774432 DOI: 10.3390/ijerph10083192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 07/23/2013] [Accepted: 07/25/2013] [Indexed: 11/23/2022]
Abstract
Vector surveillance for infectious diseases is labor intensive and constantly threatened by budget decisions. We report on outcomes of an undergraduate research experience designed to build surveillance capacity for West Nile Virus (WNV) in Montana (USA). Students maintained weekly trapping stations for mosquitoes and implemented assays to test for WNV in pools of Culex tarsalis. Test results were verified in a partnership with the state health laboratory and disseminated to the ArboNET Surveillance System. Combined with prior surveillance data, Cx. tarsalis accounted for 12% of mosquitoes with a mean capture rate of 74 (±SD = 118) Cx. tarsalis females per trap and a minimum infection rate of 0.3 infected mosquitoes per 1000 individuals. However, capture and infection rates varied greatly across years and locations. Infection rate, but not capture rate, was positively associated with the number of WNV human cases (Spearman’s rho = 0.94, p < 0.001). In most years, detection of the first positive mosquito pool occurred at least a week prior to the first reported human case. We suggest that undergraduate research can increase vector surveillance capacity while providing effective learning opportunities for students.
Collapse
Affiliation(s)
- Grant Hokit
- Department of Natural Science, Carroll College, 1601 N. Benton Ave., Helena, MT 59625, USA; E-Mails: (S.A.); (J.M.O.G.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-406-447-4460; Fax: +1-406-447-4533
| | - Sam Alvey
- Department of Natural Science, Carroll College, 1601 N. Benton Ave., Helena, MT 59625, USA; E-Mails: (S.A.); (J.M.O.G.)
| | - Jennifer M. O. Geiger
- Department of Natural Science, Carroll College, 1601 N. Benton Ave., Helena, MT 59625, USA; E-Mails: (S.A.); (J.M.O.G.)
| | - Gregory D. Johnson
- Montana State University, Bozeman, MT 59717, USA; E-Mails: (G.D.J.); (M.G.R.)
| | - Marni G. Rolston
- Montana State University, Bozeman, MT 59717, USA; E-Mails: (G.D.J.); (M.G.R.)
| | | | - Neva Tall Bear
- Little Big Horn College, Crow Agency, MT 59022, USA; E-Mail:
| |
Collapse
|
19
|
Rodriguez-Roche R, Gould EA. Understanding the dengue viruses and progress towards their control. BIOMED RESEARCH INTERNATIONAL 2013; 2013:690835. [PMID: 23936833 PMCID: PMC3722981 DOI: 10.1155/2013/690835] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 05/08/2013] [Indexed: 01/12/2023]
Abstract
Traditionally, the four dengue virus serotypes have been associated with fever, rash, and the more severe forms, haemorrhagic fever and shock syndrome. As our knowledge as well as understanding of these viruses increases, we now recognise not only that they are causing increasing numbers of human infections but also that they may cause neurological and other clinical complications, with sequelae or fatal consequences. In this review we attempt to highlight some of these features in the context of dengue virus pathogenesis. We also examine some of the efforts currently underway to control this "scourge" of the tropical and subtropical world.
Collapse
Affiliation(s)
- Rosmari Rodriguez-Roche
- Pedro Kouri Tropical Medicine Institute, WHO/PAHO Collaborating Centre for the Study of Dengue and Its Vector, Havana, Cuba.
| | | |
Collapse
|
20
|
Abstract
Vaccination is the most successful application of immunological principles to human health. Vaccine efficacy needs to be reviewed from time to time and its safety is an overriding consideration. DNA vaccines offer simple yet effective means of inducing broad-based immunity. These vaccines work by allowing the expression of the microbial antigen inside host cells that take up the plasmid. These vaccines function by generating the desired antigen inside the cells, with the advantage that this may facilitate presentation through the major histocompatibility complex. This review article is based on a literature survey and it describes the working and designing strategies of DNA vaccines. Advantages and disadvantages for this type of vaccines have also been explained, together with applications of DNA vaccines. DNA vaccines against cancer, tuberculosis, Edwardsiella tarda, HIV, anthrax, influenza, malaria, dengue, typhoid and other diseases were explored.
Collapse
|
21
|
Voge NV, Sánchez-Vargas I, Blair CD, Eisen L, Beaty BJ. Detection of dengue virus NS1 antigen in infected Aedes aegypti using a commercially available kit. Am J Trop Med Hyg 2012. [PMID: 23185074 DOI: 10.4269/ajtmh.2012.12-0477] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Epidemic dengue has emerged throughout the tropical world. In the continued absence of a vaccine against dengue virus (DENV), mosquito vector surveillance and control programs are essential to reduce human infections. An effective test to detect DENV in infected mosquitoes would be a valuable addition to the surveillance effort. We investigated DENV detection in infected Aedes aegypti using a commercially available DENV non-structural protein 1 (NS1) ELISA kit (Platelia Dengue NS1 Ag), and by reverse transcription-polymerase chain reaction (RT-PCR) and virus isolation assays. The DENV-infected mosquitoes were subjected to field-relevant conditions and assayed individually and pooled with uninfected mosquitoes. Overall, DENV NS1 antigen was detected in 98% of infected mosquitoes/pools versus 79% for RT-PCR and 29% for virus isolation. Our results indicate that NS1 is an excellent analyte for detection of DENV in Ae. aegypti and that the tested NS1 antigen kit provides a sensitive, rapid, and convenient test for DENV surveillance in mosquitoes.
Collapse
Affiliation(s)
- Natalia V Voge
- Arthropod-borne and Infectious Diseases Laboratory, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA.
| | | | | | | | | |
Collapse
|