1
|
Principi N, Esposito S. Development of Vaccines against Emerging Mosquito-Vectored Arbovirus Infections. Vaccines (Basel) 2024; 12:87. [PMID: 38250900 PMCID: PMC10818606 DOI: 10.3390/vaccines12010087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
Among emergent climate-sensitive infectious diseases, some mosquito-vectored arbovirus infections have epidemiological, social, and economic effects. Dengue virus (DENV), West Nile virus (WNV), and Chikungunya virus (CHIKV) disease, previously common only in the tropics, currently pose a major risk to global health and are expected to expand dramatically in the near future if adequate containment measures are not implemented. The lack of safe and effective vaccines is critical as it seems likely that emerging mosquito-vectored arbovirus infections will be con-trolled only when effective and safe vaccines against each of these infections become available. This paper discusses the clinical characteristics of DENV, WNV, and CHIKV infections and the state of development of vaccines against these viruses. An ideal vaccine should be able to evoke with a single administration a prompt activation of B and T cells, adequate concentrations of protecting/neutralizing antibodies, and the creation of a strong immune memory capable of triggering an effective secondary antibody response after new infection with a wild-type and/or mutated infectious agent. Moreover, the vaccine should be well tolerated, safe, easily administrated, cost-effective, and widely available throughout the world. However, the development of vaccines against emerging mosquito-vectored arbovirus diseases is far from being satisfactory, and it seems likely that it will take many years before effective and safe vaccines for all these infections are made available worldwide.
Collapse
Affiliation(s)
| | - Susanna Esposito
- Pediatric Clinic, Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
| |
Collapse
|
2
|
Dutta SK, Langenburg T. A Perspective on Current Flavivirus Vaccine Development: A Brief Review. Viruses 2023; 15:v15040860. [PMID: 37112840 PMCID: PMC10142581 DOI: 10.3390/v15040860] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/09/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
The flavivirus genus contains several clinically important pathogens that account for tremendous global suffering. Primarily transmitted by mosquitos or ticks, these viruses can cause severe and potentially fatal diseases ranging from hemorrhagic fevers to encephalitis. The extensive global burden is predominantly caused by six flaviviruses: dengue, Zika, West Nile, yellow fever, Japanese encephalitis and tick-borne encephalitis. Several vaccines have been developed, and many more are currently being tested in clinical trials. However, flavivirus vaccine development is still confronted with many shortcomings and challenges. With the use of the existing literature, we have studied these hurdles as well as the signs of progress made in flavivirus vaccinology in the context of future development strategies. Moreover, all current licensed and phase-trial flavivirus vaccines have been gathered and discussed based on their vaccine type. Furthermore, potentially relevant vaccine types without any candidates in clinical testing are explored in this review as well. Over the past decades, several modern vaccine types have expanded the field of vaccinology, potentially providing alternative solutions for flavivirus vaccines. These vaccine types offer different development strategies as opposed to traditional vaccines. The included vaccine types were live-attenuated, inactivated, subunit, VLPs, viral vector-based, epitope-based, DNA and mRNA vaccines. Each vaccine type offers different advantages, some more suitable for flaviviruses than others. Additional studies are needed to overcome the barriers currently faced by flavivirus vaccine development, but many potential solutions are currently being explored.
Collapse
|
3
|
Shafique M, Mukhtar M, Areesantichai C, Perngparn U. Effectiveness of Positive Deviance, an Asset-Based Behavior Change Approach, to Improve Knowledge, Attitudes, and Practices Regarding Dengue in Low-Income Communities (Slums) of Islamabad, Pakistan: A Mixed-Method Study. INSECTS 2022; 13:insects13010071. [PMID: 35055914 PMCID: PMC8780378 DOI: 10.3390/insects13010071] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Dengue is a mosquito-borne infection caused by the Aedes mosquito, expanding at an alarming pace around the world. Recently, Pakistan has witnessed some major dengue outbreaks, affecting thousands of individuals across the country. As there is no specific cure or vaccine, prevention and vector control remain the key methods to avoid dengue infection. In Pakistan, dengue control activities are mainly focused on information-sharing through mass media and communication materials such as pamphlets and posters. The main challenge is a lack of community participation that can create an enabling environment for communities to follow the desired behaviors. There is a strong need to design and implement community-led behavior change approaches to ensure community participation and translate the knowledge into practices. This study was conducted to better understand the effectiveness of a community engagement approach, ‘positive deviance’, on dengue prevention and control. The study was carried out in two slums affected by the recent dengue outbreak in Islamabad, Pakistan. A total of 112 persons participated in the study, which was conducted from June–October 2020. The community discovered already-existing positive behaviors surrounding dengue prevention and control, which were shared with other participants through interactive activities. The study demonstrated positive changes in knowledge, attitudes, and practices, and could be a potential tool for dengue prevention and control programs worldwide. Abstract Dengue is a mosquito-borne, viral disease that has emerged as a global health concern in recent years. In the absence of specific antiviral treatment and vaccines, prevention remains the key strategy for dengue control. Therefore, innovative and community-driven approaches are required to improve the vector control practices. This study applied and evaluated the positive deviance (PD) approach on dengue prevention and control in selected slums of Islamabad during June–October 2020. The two most dengue-affected slums, the Faisal colony and France colony, were purposively selected as intervention and control groups, respectively. A total of 112 participants (56 for the intervention and 56 for the control group) participated in the study. The intervention group was exposed for two months to locally identified role model behaviors through weekly interactive sessions, dengue sketch competitions, and role plays. Another two months enabled the community to practice these behaviors without any external support in order to explore the intervention’s sustainability. Three surveys were conducted: before the intervention, after two months, and after four months, to assess any changes in the knowledge, attitudes, and practices of participating communities. Results found that the PD intervention had a significant positive impact on dengue knowledge, attitudes, and practices in the intervention group. PD could offer an empowering and efficient community engagement tool for future dengue prevention and control, both in Pakistan and more globally.
Collapse
Affiliation(s)
- Muhammad Shafique
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; (M.S.); (C.A.)
| | | | - Chitlada Areesantichai
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; (M.S.); (C.A.)
- Health and Social Science and Addiction Research Unit (HSSRU), Bangkok 10330, Thailand
| | - Usaneya Perngparn
- College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand; (M.S.); (C.A.)
- Correspondence:
| |
Collapse
|
4
|
Top Down Computational Approach: A Vaccine Development Step to Find Novel Superantigenic HLA Binding Epitopes from Dengue Virus Proteome. Int J Pept Res Ther 2021; 27:1469-1480. [PMID: 33679273 PMCID: PMC7921607 DOI: 10.1007/s10989-021-10184-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2021] [Indexed: 11/16/2022]
Abstract
Dengue virus (DENV) is a major mosquito vector based human pathogenic flavivirus which is causing major threat worldwide, yet the availability of therapeutic treatment and several vaccines, still called for advance treatment and vaccine development. The present top down computational approach is a vaccine development step to find novel super antigenic HLA binding epitopes from DENV proteome. The approach used sequence based screening to find complete conserve and high population coverage, common epitopes among all DENV serotype. Propred and Immune Epitope Data Base were used for sequence based screening with recommended parameters. Among top 29 identified epitopes, five structural protein epitopes viz. 33LQGRGPLKL41, 249VVVLGSQEG257, 172LVGIVTLYL180, 146MKILIGVVI154, 72YIIVGVEPG80 and one nonstructural protein epitope 18LKNDIPMTG26 were showed high conserve nature and high population coverage from complete DENV proteome. Further structure based study involving docking and molecular dynamic simulation to confirm stable behavior of HLA allele–peptide complex to give potent cell mediated immune response. Docking of epitope 72YIIVGVEPG80–DRB1 0401 allele and epitope 33LQGRGPLKL41–B*5101 allele complexes showed the best binding energy of − 7.71 and − 7.20 kcal/mol, respectively and stable binding pattern over the time window during molecular dynamic simulation. This computational approach resulted novel epitopes which can be used in the design and development of short epitope based vaccines as well as diagnosis tools for dengue infection.
Collapse
|
5
|
Shukla R, Ramasamy V, Shanmugam RK, Ahuja R, Khanna N. Antibody-Dependent Enhancement: A Challenge for Developing a Safe Dengue Vaccine. Front Cell Infect Microbiol 2020; 10:572681. [PMID: 33194810 PMCID: PMC7642463 DOI: 10.3389/fcimb.2020.572681] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/15/2020] [Indexed: 01/05/2023] Open
Abstract
In 2019, the United States Food and Drug Administration accorded restricted approval to Sanofi Pasteur's Dengvaxia, a live attenuated vaccine (LAV) for dengue fever, a mosquito-borne viral disease, caused by four antigenically distinct dengue virus serotypes (DENV 1-4). The reason for this limited approval is the concern that this vaccine sensitized some of the dengue-naïve recipients to severe dengue fever. Recent knowledge about the nature of the immune response elicited by DENV viruses suggests that all LAVs have inherent capacity to predominantly elicit antibodies (Abs) against the pre-membrane (prM) and fusion loop epitope (FLE) of DENV. These antibodies are generally cross-reactive among DENV serotypes carrying a higher risk of promoting Antibody-Dependent Enhancement (ADE). ADE is a phenomenon in which suboptimal neutralizing or non-neutralizing cross-reactive antibodies bind to virus and facilitate Fcγ receptor mediated enhanced entry into host cells, followed by its replication, and thus increasing the cellular viral load. On the other hand, antibody responses directed against the host-cell receptor binding domain of DENV envelope domain-III (EDIII), exhibit a higher degree of type-specificity with lower potential of ADE. The challenges associated with whole DENV-based vaccine strategies necessitate re-focusing our attention toward the designed dengue vaccine candidates, capable of inducing predominantly type-specific immune responses. If the designed vaccines elicited predominantly EDIII-directed serotype specific antibodies in the absence of prM and FLE antibodies, this could avoid the ADE phenomenon largely associated with the prM and FLE antibodies. The generation of type-specific antibodies to each of the four DENV serotypes by the designed vaccines could avoid the immune evasion mechanisms of DENVs. For the enhanced vaccine safety, all dengue vaccine candidates should be assessed for the extent of type-specific (minimal ADE) vs. cross-reactive (ADE promoting) neutralizing antibodies. The type-specific EDIII antibodies may be more directly related to protection from disease in the absence of ADE promoted by the cross-reactive antibodies.
Collapse
Affiliation(s)
- Rahul Shukla
- Translational Health Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Viswanathan Ramasamy
- Translational Health Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Rajgokul K Shanmugam
- Translational Health Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Richa Ahuja
- Translational Health Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Navin Khanna
- Translational Health Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| |
Collapse
|
6
|
Zhang Y, Riera J, Ostrow K, Siddiqui S, de Silva H, Sarkar S, Fernando L, Gardner L. Modeling the relative role of human mobility, land-use and climate factors on dengue outbreak emergence in Sri Lanka. BMC Infect Dis 2020; 20:649. [PMID: 32883213 PMCID: PMC7469426 DOI: 10.1186/s12879-020-05369-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/25/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND More than 80,000 dengue cases including 215 deaths were reported nationally in less than 7 months between 2016 and 2017, a fourfold increase in the number of reported cases compared to the average number over 2010-2016. The region of Negombo, located in the Western province, experienced the greatest number of dengue cases in the country and is the focus area of our study, where we aim to capture the spatial-temporal dynamics of dengue transmission. METHODS We present a statistical modeling framework to evaluate the spatial-temporal dynamics of the 2016-2017 dengue outbreak in the Negombo region of Sri Lanka as a function of human mobility, land-use, and climate patterns. The analysis was conducted at a 1 km × 1 km spatial resolution and a weekly temporal resolution. RESULTS Our results indicate human mobility to be a stronger indicator for local outbreak clusters than land-use or climate variables. The minimum daily temperature was identified as the most influential climate variable on dengue cases in the region; while among the set of land-use patterns considered, urban areas were found to be most prone to dengue outbreak, followed by areas with stagnant water and then coastal areas. The results are shown to be robust across spatial resolutions. CONCLUSIONS Our study highlights the potential value of using travel data to target vector control within a region. In addition to illustrating the relative relationship between various potential risk factors for dengue outbreaks, the results of our study can be used to inform where and when new cases of dengue are likely to occur within a region, and thus help more effectively and innovatively, plan for disease surveillance and vector control.
Collapse
Affiliation(s)
- Ying Zhang
- Department of Civil and Systems Engineering, Johns Hopkins University, Baltimore, MD 21218 USA
- Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218 USA
| | - Jefferson Riera
- Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Kayla Ostrow
- Department of Civil and Systems Engineering, Johns Hopkins University, Baltimore, MD 21218 USA
| | - Sauleh Siddiqui
- Department of Environmental Science, American University, Washington, DC 20016 USA
| | - Harendra de Silva
- Department of Pediatrics, University of Colombo, Colombo, 00900 Sri Lanka
| | - Sahotra Sarkar
- Department of Philosophy, Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712 USA
| | - Lakkumar Fernando
- Centre for Clinical Management of Dengue and Dengue Haemorrhagic Fever, Negombo, 11500 Sri Lanka
| | - Lauren Gardner
- Department of Civil and Systems Engineering, Johns Hopkins University, Baltimore, MD 21218 USA
| |
Collapse
|
7
|
Hustedt J, Doum D, Keo V, Ly S, Sam B, Chan V, Boyer S, Liverani M, Alexander N, Bradley J, Prasetyo DB, Rachmat A, Lopes S, Leang R, Hii J. Ability of the Premise Condition Index to Identify Premises with Adult and Immature Aedes Mosquitoes in Kampong Cham, Cambodia. Am J Trop Med Hyg 2020; 102:1432-1439. [PMID: 32274992 PMCID: PMC7253129 DOI: 10.4269/ajtmh.19-0453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aedes-transmitted diseases, especially dengue, are increasing throughout the world and the main preventive methods include vector control and the avoidance of mosquito bites. A simple Premise Condition Index (PCI) categorizing shade, house, and yard conditions was previously developed to help prioritize households or geographical areas where resources are limited. However, evidence about the accuracy of the PCI is mixed. The current study aimed to contribute to a better understanding of the relevance by collecting data from 2,400 premises at four time points over 1 year in Kampong Cham, Cambodia. Regression models were then used to identify associations between PCI and Aedes adult female mosquitoes and pupae. In addition, receiver operating characteristic curves were used to measure the ability of PCI to identify premises in the top quartile of mosquito abundance. The density of adult Aedes females was positively associated with PCI at the household (ratio of means = 1.16 per point on the PCI scale) and cluster level (ratio of means = 1.54). However, the number of Aedes pupae was negatively associated with PCI at the household level (rate ratio = 0.74) and did not have a statistically significant association at the cluster level. Receiver operating characteristic curves suggest the PCI score had “rather low accuracy” (area under the ROC curve = 0.52 and 0.54) at identifying top-quartile premises in terms of adult female Aedes and pupae, respectively. These results suggest that caution is warranted in the programmatic use of PCI in areas of similar geography and mosquito abundance.
Collapse
Affiliation(s)
- John Hustedt
- London School of Hygiene and Tropical Medicine, London, United Kingdom.,Malaria Consortium, Phnom Penh Center, Phnom Penh, Cambodia
| | - Dyna Doum
- Malaria Consortium, Phnom Penh Center, Phnom Penh, Cambodia
| | - Vanney Keo
- Malaria Consortium, Phnom Penh Center, Phnom Penh, Cambodia
| | - Sokha Ly
- Cambodian National Dengue Control Program, Phnom Penh, Cambodia
| | - BunLeng Sam
- Cambodian National Dengue Control Program, Phnom Penh, Cambodia
| | - Vibol Chan
- World Health Organization, Phnom Penh, Cambodia
| | | | - Marco Liverani
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Neal Alexander
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - John Bradley
- London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Agus Rachmat
- US Naval Medical Research Unit-2, Phnom Penh, Cambodia
| | - Sergio Lopes
- Malaria Consortium, Phnom Penh Center, Phnom Penh, Cambodia
| | - Rithea Leang
- Cambodian National Dengue Control Program, Phnom Penh, Cambodia
| | - Jeffrey Hii
- Malaria Consortium, Phnom Penh Center, Phnom Penh, Cambodia
| |
Collapse
|
8
|
Krishnamoorthy Y, Majella MG. Economic evaluation and budget impact analysis of dengue vaccination following pre-vaccination serological screening in India. Vaccine 2020; 38:5154-5162. [PMID: 32576458 DOI: 10.1016/j.vaccine.2020.06.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/06/2020] [Accepted: 06/09/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate the budget impact and cost-effectiveness of dengue vaccination following pre-vaccination serological screening in India. METHODS We used a static cohort model (combination of decision tree and Markov model) to compare dengue disease and cost burden with and without dengue vaccination program with serological screening for a hypothetical cohort of 10-year-old adolescents. Budget impact was expressed in terms of total budget required for implementation of vaccination programme. Program impact was expressed in terms of disability-adjusted life-years (DALYs) averted. Cost effectiveness was expressed as costs per DALY averted. All costs are expressed in 2018 US dollars. Sensitivity analysis was performed for ICERs in different vaccination scenarios. RESULTS The total budget for implementation of dengue vaccination programme is approximately around US$ 530 million (INR 3620 crores). Our model results suggest dengue vaccination result in a net gain of almost 86,000 DALYS. We found the Dengue vaccine to be a cost-effective intervention with an ICER of $3364 (INR 2,30,098) which is less than three-times GDP per capita of India ($6047; INR 413,601). One-way sensitivity analysis shows that the ICER is most affected by the overall incidence of dengue infections followed by vaccine price. Probabilistic sensitivity analysis shows that ICER for dengue vaccination varied from $1182 (INR 80,837) to $6367 (INR 435,439). CONCLUSION Our study shows that dengue vaccine with pre-vaccination serological screening programme is a cost-effective intervention with the conservative estimates.
Collapse
|
9
|
Hustedt JC, Boyce R, Bradley J, Hii J, Alexander N. Use of pyriproxyfen in control of Aedes mosquitoes: A systematic review. PLoS Negl Trop Dis 2020; 14:e0008205. [PMID: 32530915 PMCID: PMC7314096 DOI: 10.1371/journal.pntd.0008205] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 06/24/2020] [Accepted: 03/10/2020] [Indexed: 01/11/2023] Open
Abstract
Dengue is the most rapidly spreading arboviral disease in the world. The current lack of fully protective vaccines and clinical therapeutics creates an urgent need to identify more effective means of controlling Aedes mosquitos, principally Aedes aegypti, as the main vector of dengue. Pyriproxyfen (PPF) is an increasingly used hormone analogue that prevents juvenile Aedes mosquitoes from becoming adults and being incapable of transmitting dengue. The objectives of the review were to (1) Determine the effect of PPF on endpoints including percentage inhibition of emergence to adulthood, larval mortality, and resistance ratios; and (2) Determine the different uses, strengths, and limitations of PPF in control of Aedes. A systematic search was applied to Pubmed, EMBASE, Web of Science, LILACS, Global Health, and the Cochrane database of Systematic Reviews. Out of 1,369 records, 90 studies met the inclusion criteria. Nearly all fit in one of the following four categories 1) Efficacy of granules, 2) Auto-dissemination/horizontal transfer, 3) use of ultra-low volume thermal fogging (ULV), thermal fogging (TF), or fumigant technologies, and 4) assessing mosquito resistance. PPF granules had consistently efficacious results of 90-100% inhibition of emergence for up to 90 days. The evidence is less robust but promising regarding PPF dust for auto-dissemination and the use of PPF in ULV, TF and fumigants. Several studies also found that while mosquito populations were still susceptible to PPF, the lethal concentrations increased among temephos-resistant mosquitoes compared to reference strains. The evidence is strong that PPF does increase immature mortality and adult inhibition in settings represented in the included studies, however future research should focus on areas where there is less evidence (e.g. auto-dissemination, sprays) and new use cases for PPF. A better understanding of the biological mechanisms of cross-resistance between PPF, temephos, and other insecticides will allow control programs to make better informed decisions.
Collapse
Affiliation(s)
- John Christian Hustedt
- MRC Tropical Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Epidemiology Department, Malaria Consortium, London, United Kingdom
| | - Ross Boyce
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - John Bradley
- MRC Tropical Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Jeffrey Hii
- Epidemiology Department, Malaria Consortium, London, United Kingdom
| | - Neal Alexander
- MRC Tropical Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom
| |
Collapse
|
10
|
Abstract
INTRODUCTION Dengue infection is the most important mosquito-borne viral disease in the world. Most mosquito control methods currently available for public health use are not very efficacious. Dengue vaccine is required to control dengue diseases in the future through the use of a safe and effective vaccine. AREAS COVERED This review covered dengue vaccine development and candidate dengue vaccines in the clinical trial pipeline including licensed dengue vaccine. EXPERT OPINION Dengue has become an intractable global health problem. Vector control has achieved only limited success in reducing the transmission of dengue. A dengue vaccine is needed as part of an integrated approach to dengue prevention and control since dengue poses a heavy economic cost to the health system and society. Because dengue is a unique and complex disease developing a dengue vaccine has proven equally complex. However, there is an advanced pipeline of vaccine research currently in clinical and preclinical studies including live-attenuated vaccine candidates as well as virus-vectored and virus-like particle-based vaccines.
Collapse
Affiliation(s)
- Usa Thisyakorn
- Tropical Medicine Cluster, Chulalongkorn University , Bangkok, Thailand
| | | |
Collapse
|
11
|
Thompson R, Martin Del Campo J, Constenla D. A review of the economic evidence of Aedes-borne arboviruses and Aedes-borne arboviral disease prevention and control strategies. Expert Rev Vaccines 2020; 19:143-162. [PMID: 32077343 DOI: 10.1080/14760584.2020.1733419] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Introduction: Aedes-borne arboviruses contributes substantially to the disease and cost burden.Areas covered: We performed a systematic review of the economic evidence surrounding aedes-borne arboviruses and strategies to prevent and control these diseases to inform disease control policy decisions and research directions. We searched four databases covering an 18-year period (2000-2018) to identify arboviral disease-related cost of illness studies, cost studies of vector control and prevention strategies, cost-effectiveness analyses and cost-benefit analyses. We identified 74 published studies that revealed substantial global total costs in yellow fever virus and dengue virus ranging from 2.1 to 57.3 billion USD. Cost studies of vector control and surveillance programs are limited, but a few studies found that costs of vector control programs ranged from 5.62 to 73.5 million USD. Cost-effectiveness evidence was limited across Aedes-borne diseases, but generally found targeted dengue vaccination programs cost-effective. This review revealed insufficient economic evidence for vaccine introduction and implementation of surveillance and vector control programs.Expert opinion: Evidence of the economic burden of aedes-borne arboviruses and the economic impact of strategies for arboviral disease prevention and control is critical to inform policy decisions and to secure continued financial support for these preventive and control measures.
Collapse
Affiliation(s)
- Ryan Thompson
- Department of International Health, Johns Hopkins Bloomberg School of Public Health (JHBSPH), International Vaccine Access Center (IVAC), Baltimore, MD, USA
| | | | - Dagna Constenla
- Department of International Health, Johns Hopkins Bloomberg School of Public Health (JHBSPH), International Vaccine Access Center (IVAC), Baltimore, MD, USA
| |
Collapse
|
12
|
Hotinger JA, May AE. Animal Models of Type III Secretion System-Mediated Pathogenesis. Pathogens 2019; 8:pathogens8040257. [PMID: 31766664 PMCID: PMC6963218 DOI: 10.3390/pathogens8040257] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 01/22/2023] Open
Abstract
The type III secretion system (T3SS) is a conserved virulence factor used by many Gram-negative pathogenic bacteria and has become an important target for anti-virulence drugs. Most T3SS inhibitors to date have been discovered using in vitro screening assays. Pharmacokinetics and other important characteristics of pharmaceuticals cannot be determined with in vitro assays alone. In vivo assays are required to study pathogens in their natural environment and are an important step in the development of new drugs and vaccines. Animal models are also required to understand whether T3SS inhibition will enable the host to clear the infection. This review covers selected animal models (mouse, rat, guinea pig, rabbit, cat, dog, pig, cattle, primates, chicken, zebrafish, nematode, wax moth, flea, fly, and amoeba), where T3SS activity and infectivity have been studied in relation to specific pathogens (Escherichia coli, Salmonella spp., Pseudomonas spp., Shigella spp., Bordetella spp., Vibrio spp., Chlamydia spp., and Yersinia spp.). These assays may be appropriate for those researching T3SS inhibition.
Collapse
|
13
|
Meeting Report: WHO consultation on considerations for regulatory expectations of Zika virus vaccines for use during an emergency. Vaccine 2019; 37:7443-7450. [DOI: 10.1016/j.vaccine.2016.10.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 10/16/2016] [Accepted: 10/17/2016] [Indexed: 12/25/2022]
|
14
|
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]
|
15
|
van Eerde A, Gottschamel J, Bock R, Hansen KEA, Munang'andu HM, Daniell H, Liu Clarke J. Production of tetravalent dengue virus envelope protein domain III based antigens in lettuce chloroplasts and immunologic analysis for future oral vaccine development. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1408-1417. [PMID: 30578710 PMCID: PMC6576073 DOI: 10.1111/pbi.13065] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 05/19/2023]
Abstract
Dengue fever is a mosquito (Aedes aegypti) -transmitted viral disease that is endemic in more than 125 countries around the world. There are four serotypes of the dengue virus (DENV 1-4) and a safe and effective dengue vaccine must provide protection against all four serotypes. To date, the first vaccine, Dengvaxia (CYD-TDV), is available after many decades' efforts, but only has moderate efficacy. More effective and affordable vaccines are hence required. Plants offer promising vaccine production platforms and food crops offer additional advantages for the production of edible human and animal vaccines, thus eliminating the need for expensive fermentation, purification, cold storage and sterile delivery. Oral vaccines can elicit humoural and cellular immunity via both the mucosal and humoral immune systems. Here, we report the production of tetravalent EDIII antigen (EDIII-1-4) in stably transformed lettuce chloroplasts. Transplastomic EDIII-1-4-expressing lettuce lines were obtained and homoplasmy was verified by Southern blot analysis. Expression of EDIII-1-4 antigens was demonstrated by immunoblotting, with the EDIII-1-4 antigen accumulating to 3.45% of the total protein content. Immunological assays in rabbits showed immunogenicity of EDIII-1-4. Our in vitro gastrointestinal digestion analysis revealed that EDIII-1-4 antigens are well protected when passing through the oral and gastric digestion phases but underwent degradation during the intestinal phase. Our results demonstrate that lettuce chloroplast engineering is a promising approach for future production of an affordable oral dengue vaccine.
Collapse
Affiliation(s)
- André van Eerde
- NIBIO – Norwegian Institute of Bioeconomy ResearchDivision of Biotechnology and Plant HealthÅsNorway
| | - Johanna Gottschamel
- NIBIO – Norwegian Institute of Bioeconomy ResearchDivision of Biotechnology and Plant HealthÅsNorway
| | - Ralph Bock
- Max Planck Institute of Molecular Plant PhysiologyPotsdam‐GolmGermany
| | | | | | - Henry Daniell
- Department of BiochemistrySchool of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Jihong Liu Clarke
- NIBIO – Norwegian Institute of Bioeconomy ResearchDivision of Biotechnology and Plant HealthÅsNorway
| |
Collapse
|
16
|
Tahir Ul Qamar M, Maryam A, Muneer I, Xing F, Ashfaq UA, Khan FA, Anwar F, Geesi MH, Khalid RR, Rauf SA, Siddiqi AR. Computational screening of medicinal plant phytochemicals to discover potent pan-serotype inhibitors against dengue virus. Sci Rep 2019; 9:1433. [PMID: 30723263 PMCID: PMC6363786 DOI: 10.1038/s41598-018-38450-1] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 12/19/2018] [Indexed: 02/07/2023] Open
Abstract
Emergence of Dengue as one of the deadliest viral diseases prompts the need for development of effective therapeutic agents. Dengue virus (DV) exists in four different serotypes and infection caused by one serotype predisposes its host to another DV serotype heterotypic re-infection. We undertook virtual ligand screening (VLS) to filter compounds against DV that may inhibit inclusively all of its serotypes. Conserved non-structural DV protein targets such as NS1, NS3/NS2B and NS5, which play crucial role in viral replication, infection cycle and host interaction, were selected for screening of vital antiviral drug leads. A dataset of plant based natural antiviral derivatives was developed. Molecular docking was performed to estimate the spatial affinity of target compounds for the active sites of DV’s NS1, NS3/NS2B and NS5 proteins. The drug likeliness of the screened compounds was followed by ADMET analysis whereas the binding behaviors were further elucidated through molecular dynamics (MD) simulation experiments. VLS screened three potential compounds including Canthin-6-one 9-O-beta-glucopyranoside, Kushenol W and Kushenol K which exhibited optimal binding with all the three conserved DV proteins. This study brings forth novel scaffolds against DV serotypes to serve as lead molecules for further optimization and drug development against all DV serotypes with equal effect against multiple disease causing DV proteins. We therefore anticipate that the insights given in the current study could be regarded valuable towards exploration and development of a broad-spectrum natural anti-dengue therapy.
Collapse
Affiliation(s)
| | - Arooma Maryam
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Iqra Muneer
- School of Life Sciences, University of Science and Technology of China, Hefei, P.R. China
| | - Feng Xing
- College of Informatics, Huazhong Agricultural University, Wuhan, P.R. China
| | - Usman Ali Ashfaq
- Department of Bioinformatics and Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Faheem Ahmed Khan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education China, Huazhong Agricultural University, Wuhan, P.R. China
| | - Farooq Anwar
- Department of Chemistry, University of Sargodha, Sargodha, Pakistan
| | - Mohammed H Geesi
- Department of Chemistry, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia.
| | - Rana Rehan Khalid
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Sadaf Abdul Rauf
- Department of Computer Science, Fatima Jinnah Women University, Rawalpindi, Pakistan
| | - Abdul Rauf Siddiqi
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan.
| |
Collapse
|
17
|
In vitro analysis of synthetic peptides in blocking the entry of dengue virus. Virus Res 2019; 260:142-150. [DOI: 10.1016/j.virusres.2018.11.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 11/29/2018] [Accepted: 11/29/2018] [Indexed: 12/20/2022]
|
18
|
Wilder-Smith A, Chawla T, Ooi EE. Dengue: An Expanding Neglected Tropical Disease. NEGLECTED TROPICAL DISEASES - EAST ASIA 2019. [DOI: 10.1007/978-3-030-12008-5_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
19
|
Ahmad Z, Poh CL. The Conserved Molecular Determinants of Virulence in Dengue Virus. Int J Med Sci 2019; 16:355-365. [PMID: 30911269 PMCID: PMC6428985 DOI: 10.7150/ijms.29938] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 12/17/2018] [Indexed: 12/22/2022] Open
Abstract
Dengue virus belongs to the Flaviviridae family which also includes viruses such as the Zika, West Nile and yellow fever virus. Dengue virus generally causes mild disease, however, more severe forms of the dengue virus infection, dengue haemorrhagic fever (DHF) and dengue haemorrhagic fever with shock syndrome (DSS) can also occur, resulting in multiple organ failure and even death, especially in children. The only dengue vaccine available in the market, CYD-TDV offers limited coverage for vaccinees from 9-45 years of age and is only recommended for individuals with prior dengue exposure. A number of mutations that were shown to attenuate virulence of dengue virus in vitro and/or in vivo have been identified in the literature. The mutations which fall within the conserved regions of all four dengue serotypes are discussed. This review hopes to provide information leading to the construction of a live attenuated dengue vaccine that is suitable for all ages, irrespective of the infecting dengue serotype and prior dengue exposure.
Collapse
Affiliation(s)
- Zuleeza Ahmad
- Centre for Virus and Vaccine Research, School of Science and Technology, Sunway University, 47500 Subang Jaya, Selangor, Malaysia
| | - Chit Laa Poh
- Centre for Virus and Vaccine Research, School of Science and Technology, Sunway University, 47500 Subang Jaya, Selangor, Malaysia
| |
Collapse
|
20
|
Bos S, Gadea G, Despres P. Dengue: a growing threat requiring vaccine development for disease prevention. Pathog Glob Health 2018; 112:294-305. [PMID: 30213255 PMCID: PMC6381545 DOI: 10.1080/20477724.2018.1514136] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Dengue disease is the most prevalent mosquito-borne viral infection in humans. At least one half of the global population is estimated at risk of infection and an estimated 390 million people are infected each year. Over the past few years, dengue burden continued to increase, mainly impacting developing countries. Alarming changes in dengue epidemiology were observed highlighting a spread from tropical to subtropical regions as well as urban to rural areas. An increase in the co-infections with the four serotypes has also been noticed, involving a shift in the targeted population from pediatric to adult. Facing these global changes, authorities will have to reinforce preventive actions and adapt healthcare management. New prophylactic strategies are urgently needed to prevent severe forms of dengue disease. The lack of specific antiviral therapies available turns vaccine development into a socio-economic challenge. In this review, we propose an update on the dengue global trends and different vaccine strategies in development. A particular attention will be paid to up-to-date information on dengue transmission and the protective efficacy of newly commercialized tetravalent dengue vaccine Dengvaxia®, as well as the most advanced candidate vaccines in clinical development.
Collapse
Affiliation(s)
- Sandra Bos
- a Unité Mixte Processus Infectieux en Milieu Insulaire Tropical , Plateforme Technologique CYROI, Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249 , Sainte-Clotilde , La Réunion , France
| | - Gilles Gadea
- a Unité Mixte Processus Infectieux en Milieu Insulaire Tropical , Plateforme Technologique CYROI, Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249 , Sainte-Clotilde , La Réunion , France
| | - Philippe Despres
- a Unité Mixte Processus Infectieux en Milieu Insulaire Tropical , Plateforme Technologique CYROI, Université de La Réunion, INSERM U1187, CNRS UMR 9192, IRD UMR 249 , Sainte-Clotilde , La Réunion , France
| |
Collapse
|
21
|
Tripathi NK, Shrivastava A. Recent Developments in Recombinant Protein-Based Dengue Vaccines. Front Immunol 2018; 9:1919. [PMID: 30190720 PMCID: PMC6115509 DOI: 10.3389/fimmu.2018.01919] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 08/03/2018] [Indexed: 12/11/2022] Open
Abstract
Recombinant proteins are gaining enormous importance these days due to their wide application as biopharmaceutical products and proven safety record. Various recombinant proteins of therapeutic and prophylactic importance have been successfully produced in microbial and higher expression host systems. Since there is no specific antiviral therapy available against dengue, the prevention by vaccination is the mainstay in reducing the disease burden. Therefore, efficacious vaccines are needed to control the spread of dengue worldwide. Dengue is an emerging viral disease caused by any of dengue virus 1-4 serotypes that affects the human population around the globe. Dengue virus is a single stranded RNA virus encoding three structural proteins (capsid protein, pre-membrane protein, and envelope protein) and seven non-structural proteins (NS1, NS2a, NS2b, NS3, NS4a, NS4b, NS5). As the only licensed dengue vaccine (Dengvaxia) is unable to confer balanced protection against all the serotypes, therefore various approaches for development of dengue vaccines including tetravalent live attenuated, inactivated, plasmid DNA, virus-vectored, virus-like particles, and recombinant subunit vaccines are being explored. These candidates are at different stages of vaccine development and have their own merits and demerits. The promising subunit vaccines are mainly based on envelope or its domain and non-structural proteins of dengue virus. These proteins have been produced in different hosts and are being investigated for development of a successful dengue vaccine. Novel immunogens have been designed employing various strategies like protein engineering and fusion of antigen with various immunostimulatory motif to work as self-adjuvant. Moreover, recombinant proteins can be formulated with novel adjuvants to enhance the immunogenicity and thus conferring better protection to the vaccinees. With the advent of newer and safer host systems, these recombinant proteins can be produced in a cost effective manner at large scale for vaccine studies. In this review, we summarize recent developments in recombinant protein based dengue vaccines that could lead to a good number of efficacious vaccine candidates for future human use and ultimately alternative dengue vaccine candidates.
Collapse
Affiliation(s)
- Nagesh K. Tripathi
- Bioprocess Scale Up Facility, Defence Research and Development Establishment, Gwalior, India
| | - Ambuj Shrivastava
- Division of Virology, Defence Research and Development Establishment, Gwalior, India
| |
Collapse
|
22
|
Park MS, Kim JI, Lee I, Park S, Bae JY, Park MS. Towards the Application of Human Defensins as Antivirals. Biomol Ther (Seoul) 2018; 26:242-254. [PMID: 29310427 PMCID: PMC5933891 DOI: 10.4062/biomolther.2017.172] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/29/2017] [Accepted: 10/12/2017] [Indexed: 12/14/2022] Open
Abstract
Defensins are antimicrobial peptides that participate in the innate immunity of hosts. Humans constitutively and/or inducibly express α- and β-defensins, which are known for their antiviral and antibacterial activities. This review describes the application of human defensins. We discuss the extant experimental results, limited though they are, to consider the potential applicability of human defensins as antiviral agents. Given their antiviral effects, we propose that basic research be conducted on human defensins that focuses on RNA viruses, such as human immunodeficiency virus (HIV), influenza A virus (IAV), respiratory syncytial virus (RSV), and dengue virus (DENV), which are considered serious human pathogens but have posed huge challenges for vaccine development for different reasons. Concerning the prophylactic and therapeutic applications of defensins, we then discuss the applicability of human defensins as antivirals that has been demonstrated in reports using animal models. Finally, we discuss the potential adjuvant-like activity of human defensins and propose an exploration of the ‘defensin vaccine’ concept to prime the body with a controlled supply of human defensins. In sum, we suggest a conceptual framework to achieve the practical application of human defensins to combat viral infections.
Collapse
Affiliation(s)
- Mee Sook Park
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Jin Il Kim
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Ilseob Lee
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Sehee Park
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Joon-Yong Bae
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Man-Seong Park
- Department of Microbiology, Institute for Viral Diseases, College of Medicine, Korea University, Seoul 02841, Republic of Korea
| |
Collapse
|
23
|
Pollett S, Melendrez MC, Maljkovic Berry I, Duchêne S, Salje H, Cummings DAT, Jarman RG. Understanding dengue virus evolution to support epidemic surveillance and counter-measure development. INFECTION GENETICS AND EVOLUTION 2018; 62:279-295. [PMID: 29704626 DOI: 10.1016/j.meegid.2018.04.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 04/20/2018] [Accepted: 04/24/2018] [Indexed: 11/30/2022]
Abstract
Dengue virus (DENV) causes a profound burden of morbidity and mortality, and its global burden is rising due to the co-circulation of four divergent DENV serotypes in the ecological context of globalization, travel, climate change, urbanization, and expansion of the geographic range of the Ae.aegypti and Ae.albopictus vectors. Understanding DENV evolution offers valuable opportunities to enhance surveillance and response to DENV epidemics via advances in RNA virus sequencing, bioinformatics, phylogenetic and other computational biology methods. Here we provide a scoping overview of the evolution and molecular epidemiology of DENV and the range of ways that evolutionary analyses can be applied as a public health tool against this arboviral pathogen.
Collapse
Affiliation(s)
- S Pollett
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA; Marie Bashir Institute, University of Sydney, NSW, Australia; Institute for Global Health Sciences, University of California at San Francisco, CA, USA.
| | - M C Melendrez
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - I Maljkovic Berry
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| | - S Duchêne
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Australia
| | - H Salje
- Institut Pasteur, Paris, France; Johns Hopkins School of Public Health, Baltimore, MD, USA
| | - D A T Cummings
- Johns Hopkins School of Public Health, Baltimore, MD, USA; University of Florida, FL, USA
| | - R G Jarman
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, USA
| |
Collapse
|
24
|
Shukla R, Rajpoot RK, Arora U, Poddar A, Swaminathan S, Khanna N. Pichia pastoris-Expressed Bivalent Virus-Like Particulate Vaccine Induces Domain III-Focused Bivalent Neutralizing Antibodies without Antibody-Dependent Enhancement in Vivo. Front Microbiol 2018; 8:2644. [PMID: 29367852 PMCID: PMC5768101 DOI: 10.3389/fmicb.2017.02644] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/19/2017] [Indexed: 12/02/2022] Open
Abstract
Dengue, a significant public health problem in several countries around the world, is caused by four different serotypes of mosquito-borne dengue viruses (DENV-1, -2, -3, and -4). Antibodies to any one DENV serotype which can protect against homotypic re-infection, do not offer heterotypic cross-protection. In fact, cross-reactive antibodies may augment heterotypic DENV infection through antibody-dependent enhancement (ADE). A recently launched live attenuated vaccine (LAV) for dengue, which consists of a mixture of four chimeric yellow-fever/dengue vaccine viruses, may be linked to the induction of disease-enhancing antibodies. This is likely related to viral interference among the replicating viral strains, resulting in an unbalanced immune response, as well as to the fact that the LAV encodes prM, a DENV protein documented to elicit ADE-mediating antibodies. This makes it imperative to explore the feasibility of alternate ADE risk-free vaccine candidates. Our quest for a non-replicating vaccine centered on the DENV envelope (E) protein which mediates virus entry into the host cell and serves as an important target of the immune response. Serotype-specific neutralizing epitopes and the host receptor recognition function map to E domain III (EDIII). Recently, we found that Pichia pastoris-expressed DENV E protein, of all four serotypes, self-assembled into virus-like particles (VLPs) in the absence of prM. Significantly, these VLPs displayed EDIII and elicited EDIII-focused DENV-neutralizing antibodies in mice. We now report the creation and characterization of a novel non-replicating recombinant particulate vaccine candidate, produced by co-expressing the E proteins of DENV-1 and DENV-2 in P. pastoris. The two E proteins co-assembled into bivalent mosaic VLPs (mVLPs) designated as mE1E2bv VLPs. The mVLP, which preserved the serotype-specific antigenic integrity of its two component proteins, elicited predominantly EDIII-focused homotypic virus-neutralizing antibodies in BALB/c mice, demonstrating its efficacy. In an in vivo ADE model, mE1E2bv VLP-induced antibodies lacked discernible ADE potential, compared to the cross-reactive monoclonal antibody 4G2, as evidenced by significant reduction in the levels of IL-6 and TNF-α, suggesting inherent safety. The results obtained with these bivalent mVLPs suggest the feasibility of incorporating the E proteins of DENV-3 and DENV-4 to create a tetravalent mVLP vaccine.
Collapse
Affiliation(s)
- Rahul Shukla
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Ravi K Rajpoot
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Upasana Arora
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Ankur Poddar
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Sathyamangalam Swaminathan
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Navin Khanna
- Recombinant Gene Products Group, Molecular Medicine Division, International Centre for Genetic Engineering and Biotechnology, New Delhi, India.,Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, India.,Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
| |
Collapse
|
25
|
Katzelnick LC, Harris E. Immune correlates of protection for dengue: State of the art and research agenda. Vaccine 2017; 35:4659-4669. [PMID: 28757058 PMCID: PMC5924688 DOI: 10.1016/j.vaccine.2017.07.045] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/04/2017] [Accepted: 07/13/2017] [Indexed: 01/15/2023]
Abstract
Dengue viruses (DENV1-4) are mosquito-borne flaviviruses estimated to cause up to ∼400 million infections and ∼100 million dengue cases each year. Factors that contribute to protection from and risk of dengue and severe dengue disease have been studied extensively but are still not fully understood. Results from Phase 3 vaccine efficacy trials have recently become available for one vaccine candidate, now licensed for use in several countries, and more Phase 2 and 3 studies of additional vaccine candidates are ongoing, making these issues all the more urgent and timely. At the "Summit on Dengue Immune Correlates of Protection", held in Annecy, France, on March 8-9, 2016, dengue experts from diverse fields came together to discuss the current understanding of the immune response to and protection from DENV infection and disease, identify key unanswered questions, discuss data on immune correlates and plans for comparison of results across assays/consortia, and propose a research agenda for investigation of dengue immune correlates, all in the context of both natural infection studies and vaccine trials.
Collapse
Affiliation(s)
- Leah C Katzelnick
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720-3370, USA; Department of Biology, University of Florida, Gainesville, FL 32611, USA
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720-3370, USA.
| |
Collapse
|
26
|
Hustedt J, Doum D, Keo V, Ly S, Sam B, Chan V, Alexander N, Bradley J, Prasetyo DB, Rachmat A, Muhammad S, Lopes S, Leang R, Hii J. Determining the efficacy of guppies and pyriproxyfen (Sumilarv® 2MR) combined with community engagement on dengue vectors in Cambodia: study protocol for a randomized controlled trial. Trials 2017; 18:367. [PMID: 28778174 PMCID: PMC5545006 DOI: 10.1186/s13063-017-2105-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 07/14/2017] [Indexed: 11/16/2022] Open
Abstract
Background Evidence on the effectiveness of low-cost, sustainable, biological vector-control tools for the Aedes mosquitoes is limited. Therefore, the purpose of this trial is to estimate the impact of guppy fish (guppies), in combination with the use of the larvicide pyriproxyfen (Sumilarv® 2MR), and Communication for Behavioral Impact (COMBI) activities to reduce entomological indices in Cambodia. Methods/design In this cluster randomized controlled, superiority trial, 30 clusters comprising one or more villages each (with approximately 170 households) will be allocated, in a 1:1:1 ratio, to receive either (1) three interventions (guppies, Sumilarv® 2MR, and COMBI activities), (2) two interventions (guppies and COMBI activities), or (3) control (standard vector control). Households will be invited to participate, and entomology surveys among 40 randomly selected households per cluster will be carried out quarterly. The primary outcome will be the population density of adult female Aedes mosquitoes (i.e., number per house) trapped using adult resting collections. Secondary outcome measures will include the House Index, Container Index, Breteau Index, Pupae Per House, Pupae Per Person, mosquito infection rate, guppy fish coverage, Sumilarv® 2MR coverage, and percentage of respondents with knowledge about Aedes mosquitoes causing dengue. In the primary analysis, adult female Aedes density and mosquito infection rates will be aggregated over follow-up time points to give a single rate per cluster. This will be analyzed by negative binomial regression, yielding density ratios. Discussion This trial is expected to provide robust estimates of the intervention effect. A rigorous evaluation of these vector-control interventions is vital to developing an evidence-based dengue control strategy and to help direct government resources. Trial registration Current Controlled Trials, ID: ISRCTN85307778. Registered on 25 October 2015. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-2105-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- John Hustedt
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia. .,London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
| | - Dyna Doum
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia
| | - Vanney Keo
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia
| | - Sokha Ly
- Cambodian National Dengue Control Program, #477 Betong Street.(Corner St.92), Village Trapangsvay, Phnom Penh, Cambodia
| | - BunLeng Sam
- Cambodian National Dengue Control Program, #477 Betong Street.(Corner St.92), Village Trapangsvay, Phnom Penh, Cambodia
| | - Vibol Chan
- World Health Organization, No. 177-179 corner Streets Pasteur (51) and 254; Sankat Chak Tomouk Khan Daun Penh, Phnom Penh, Cambodia
| | - Neal Alexander
- London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - John Bradley
- London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK
| | - Didot Budi Prasetyo
- US Naval Medical Research Unit-2, #2, St. 289, Boeung Kok 2 commune, Toul Kork district, 289 Samdach Penn Nouth, Phnom Penh, 1225, Cambodia
| | - Agus Rachmat
- US Naval Medical Research Unit-2, #2, St. 289, Boeung Kok 2 commune, Toul Kork district, 289 Samdach Penn Nouth, Phnom Penh, 1225, Cambodia
| | - Shafique Muhammad
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia
| | - Sergio Lopes
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia
| | - Rithea Leang
- Cambodian National Dengue Control Program, #477 Betong Street.(Corner St.92), Village Trapangsvay, Phnom Penh, Cambodia
| | - Jeffrey Hii
- Malaria Consortium, House #91, St. 95, Boeung Trabek, Chamkar Morn, PO Box 2116, Phnom Penh, 12305, Cambodia
| |
Collapse
|
27
|
Shrivastava A, Tripathi NK, Dash PK, Parida M. Working towards dengue as a vaccine-preventable disease: challenges and opportunities. Expert Opin Biol Ther 2017; 17:1193-1199. [PMID: 28707486 DOI: 10.1080/14712598.2017.1356284] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Dengue is an emerging viral disease that affects the human population around the globe. Recent advancements in dengue virus research have opened new avenues for the development of vaccines against dengue. The development of a vaccine against dengue is a challenging task because any of the four serotypes of dengue viruses can cause disease. The development of a dengue vaccine aims to provide balanced protection against all the serotypes. Several dengue vaccine candidates are in the developmental stages such as inactivated, live attenuated, recombinant subunit, and plasmid DNA vaccines. Area covered: The authors provide an overview of the progress made in the development of much needed dengue vaccines. The authors include their expert opinion and their perspectives for future developments. Expert opinion: Human trials of a live attenuated tetravalent chimeric vaccine have clearly demonstrated its potential as a dengue vaccine. Other vaccine candidate molecules such as DENVax, a recombinant chimeric vaccine andTetraVax, are at different stages of development at this time. The authors believe that the novel strategies for testing and improving the immune response of vaccine candidates in humans will eventually lead to the development of a successful dengue vaccine in future.
Collapse
Affiliation(s)
- Ambuj Shrivastava
- a Division of Virology , Defence Research and Development Establishment , Gwalior , India
| | - Nagesh K Tripathi
- a Division of Virology , Defence Research and Development Establishment , Gwalior , India
| | - Paban K Dash
- a Division of Virology , Defence Research and Development Establishment , Gwalior , India
| | - Manmohan Parida
- a Division of Virology , Defence Research and Development Establishment , Gwalior , India
| |
Collapse
|
28
|
Carabali M, Lim JK, Velez DC, Trujillo A, Egurrola J, Lee KS, Kaufman JS, DaSilva LJ, Velez ID, Osorio JE. Dengue virus serological prevalence and seroconversion rates in children and adults in Medellin, Colombia: implications for vaccine introduction. Int J Infect Dis 2017; 58:27-36. [PMID: 28284914 PMCID: PMC5421161 DOI: 10.1016/j.ijid.2017.02.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Dengue is an important public health problem worldwide. A vaccine has recently been licensed in some countries of Latin America and Asia. Recommendations for dengue vaccine introduction include endemicity and a high serological prevalence of dengue in the territories considering its introduction. METHODS A community-based survey was conducted to estimate dengue seroprevalence and age-specific seroconversion rates in a community in Medellin, Colombia, using a dengue serological test (IgG indirect ELISA). Residents were selected at random and were first screened for dengue infection; they were then followed over 2.5 years. RESULTS A total of 3684 individuals aged between 1 and 65 years participated in at least one survey. The overall dengue seroprevalence was 61%, and only 3.3% of seropositive subjects self-reported a past history of dengue. Among dengue virus (DENV)-naïve subjects with more than two visits (n=1002), the overall seroconversion rate was 8.7% (95% confidence interval 7.3-10.4) per 1000 person-months, over the study period. Overall, the mean age of DENV prevalent subjects was significantly higher than the mean age of seroconverted subjects. Specifically, DENV seropositivity over 70% was observed in participants over 21 years old. Serotype-specific plaque-reduction neutralization tests (PRNT) revealed that all four dengue serotypes were circulating, with DENV4 being most prevalent. CONCLUSIONS These laboratory-based findings could inform dengue vaccine decisions, as they provide age-specific seroprevalence and seroconversion data, evidencing permanent and ongoing dengue transmission in the study area. This study provides evidence for the existing rates of secondary and heterotypic responses, presenting a challenge that must be addressed adequately by the new vaccine candidates.
Collapse
Affiliation(s)
- Mabel Carabali
- Dengue Vaccine Initiative, International Vaccine Institute, SNU Research Park, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada.
| | - Jacqueline Kyungah Lim
- Dengue Vaccine Initiative, International Vaccine Institute, SNU Research Park, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea
| | - Diana Carolina Velez
- Program for the Study and Control of Tropical Diseases, Universidad de Antioquia, Medellín, Colombia
| | - Andrea Trujillo
- Program for the Study and Control of Tropical Diseases, Universidad de Antioquia, Medellín, Colombia
| | - Jorge Egurrola
- Program for the Study and Control of Tropical Diseases, Universidad de Antioquia, Medellín, Colombia
| | - Kang Sung Lee
- Dengue Vaccine Initiative, International Vaccine Institute, SNU Research Park, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea
| | - Jay S Kaufman
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Luiz Jacinto DaSilva
- Dengue Vaccine Initiative, International Vaccine Institute, SNU Research Park, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, South Korea
| | - Ivan Dario Velez
- Program for the Study and Control of Tropical Diseases, Universidad de Antioquia, Medellín, Colombia
| | - Jorge E Osorio
- Program for the Study and Control of Tropical Diseases, Universidad de Antioquia, Medellín, Colombia; Department of Pathobiological Sciences, University of Wisconsin, Madison, Wisconsin, USA
| |
Collapse
|
29
|
Katzelnick LC, Coloma J, Harris E. Dengue: knowledge gaps, unmet needs, and research priorities. THE LANCET. INFECTIOUS DISEASES 2017; 17:e88-e100. [PMID: 28185868 DOI: 10.1016/s1473-3099(16)30473-x] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/29/2016] [Accepted: 10/18/2016] [Indexed: 01/09/2023]
Abstract
Dengue virus is a mosquito-borne pathogen that causes up to about 100 million cases of disease each year, placing a major public health, social, and economic burden on numerous low-income and middle-income countries. Major advances by investigators, vaccine developers, and affected communities are revealing new insights and enabling novel interventions and approaches to dengue prevention and control. Such research has highlighted further questions about both the basic understanding of dengue and efforts to develop new tools. In this report, the third in a Series on dengue, we discuss existing approaches to dengue diagnostics, disease prognosis, surveillance, and vector control in low-income and middle-income countries, as well as potential consequences of vaccine introduction. We also summarise current knowledge and recent insights into dengue epidemiology, immunology, and pathogenesis, and their implications for understanding natural infection and current and future vaccines.
Collapse
Affiliation(s)
- Leah C Katzelnick
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
| | - Josefina Coloma
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA.
| |
Collapse
|
30
|
Pang T, Mak TK, Gubler DJ. Prevention and control of dengue-the light at the end of the tunnel. THE LANCET. INFECTIOUS DISEASES 2017; 17:e79-e87. [PMID: 28185870 DOI: 10.1016/s1473-3099(16)30471-6] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 10/16/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022]
Abstract
Advances in the development of new dengue control tools, including vaccines and vector control, herald a new era of desperately needed dengue prevention and control. The burden of dengue has expanded for decades, and now affects more than 120 countries. Complex, large-scale global forces have and will continue to contribute to the expansion of dengue, including population growth, unplanned urbanisation, and suboptimal mosquito control in urban centres. Although no so-called magic bullets are available, there is new optimism following the first licensure of a dengue vaccine and other promising vaccine candidates, and the development of novel vector control interventions to help control dengue and other expanding mosquito-borne diseases such as Zika virus. Implementation of effective and sustainable immunisation programmes to complement existing methods will add complexity to the health systems of affected countries, which have varying levels of robustness and maturity. Long-term high prioritisation and adequate resources are needed. The way forward is full commitment to addressing a complex disease with a set of solutions integrating vaccination and vector control methods. A whole systems approach is thus needed to integrate these various approaches and strategies for controlling dengue within the goal of universal health coverage. The ultimate objective of these interventions will be to reduce the disease burden in a sustainable and equitable manner.
Collapse
Affiliation(s)
- Tikki Pang
- Lee Kuan Yew School of Public Policy, National University of Singapore, Singapore.
| | - Tippi K Mak
- Regional Health & Community Outreach Division, Health Promotion Board, Singapore
| | - Duane J Gubler
- Emerging Infectious Diseases Programme, Duke-NUS Medical School, National University of Singapore, Singapore
| |
Collapse
|
31
|
Vazquez-Prokopec GM, Montgomery BL, Horne P, Clennon JA, Ritchie SA. Combining contact tracing with targeted indoor residual spraying significantly reduces dengue transmission. SCIENCE ADVANCES 2017; 3:e1602024. [PMID: 28232955 PMCID: PMC5315446 DOI: 10.1126/sciadv.1602024] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 11/02/2016] [Indexed: 05/26/2023]
Abstract
The widespread transmission of dengue viruses (DENV), coupled with the alarming increase of birth defects and neurological disorders associated with Zika virus, has put the world in dire need of more efficacious tools for Aedes aegypti-borne disease mitigation. We quantitatively investigated the epidemiological value of location-based contact tracing (identifying potential out-of-home exposure locations by phone interviews) to infer transmission foci where high-quality insecticide applications can be targeted. Space-time statistical modeling of data from a large epidemic affecting Cairns, Australia, in 2008-2009 revealed a complex pattern of transmission driven primarily by human mobility (Cairns accounted for ~60% of virus transmission to and from residents of satellite towns, and 57% of all potential exposure locations were nonresidential). Targeted indoor residual spraying with insecticides in potential exposure locations reduced the probability of future DENV transmission by 86 to 96%, compared to unsprayed premises. Our findings provide strong evidence for the effectiveness of combining contact tracing with residual spraying within a developed urban center, and should be directly applicable to areas with similar characteristics (for example, southern USA, Europe, or Caribbean countries) that need to control localized Aedes-borne virus transmission or to protect pregnant women's homes in areas with active Zika transmission. Future theoretical and empirical research should focus on evaluation of the applicability and scalability of this approach to endemic areas with variable population size and force of DENV infection.
Collapse
Affiliation(s)
- Gonzalo M. Vazquez-Prokopec
- Department of Environmental Sciences, Emory University, Atlanta, GA 30322, USA
- Global Health Institute, Emory University, Atlanta, GA 30322, USA
| | - Brian L. Montgomery
- Tropical Public Health Unit Network, Queensland Health, Cairns, Queensland 4870, Australia
- Metro South Public Health Unit, Metro South Health, Coopers Plains, Brisbane, Queensland 4113, Australia
| | - Peter Horne
- Tropical Public Health Unit Network, Queensland Health, Cairns, Queensland 4870, Australia
| | - Julie A. Clennon
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Scott A. Ritchie
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Queensland 4878, Australia
- Australian Institute of Tropical Health and Medicine, James Cook University, Cairns 4878, Australia
| |
Collapse
|
32
|
Dawes BE, Smalley CA, Tiner BL, Beasley DWC, Milligan GN, Reece LM, Hombach J, Barrett ADT. Research and development of Zika virus vaccines. NPJ Vaccines 2016; 1:16007. [PMID: 29263851 PMCID: PMC5707891 DOI: 10.1038/npjvaccines.2016.7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/27/2016] [Accepted: 06/09/2016] [Indexed: 11/20/2022] Open
Abstract
Zika virus (ZIKV) is a member of the family Flaviviridae, genus Flavivirus, and is transmitted by Aedes sp. mosquitoes. There are three genetic lineages of ZIKV: the East African, West African and Asian lineages. Until recently, Zika fever (ZF) has normally been considered a rare, mild febrile disease, but reports since 2012 have shown potentially severe complications associated with ZIKV infection, including microcephaly and Guillain-Barré syndrome. There are no licensed vaccines for ZIKV; however, many vaccine platforms/approaches that have been utilised for other flavivirus vaccines are being applied to ZIKV. Given the current outbreak of ZIKV in the Americas with its associated risks to pregnancy, we summarise what is known about the virus, how knowledge of currently licensed flavivirus vaccines can be applied to ZIKV vaccine development and the assessments of potential challenges for ZIKV vaccine testing and evaluation.
Collapse
Affiliation(s)
- Brian E Dawes
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Claire A Smalley
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Bethany L Tiner
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - David WC Beasley
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
- Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA
- World Health Organization Collaborating Center for Vaccine Research, Evaluation and Training on Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX, USA
- Institutional Office of Regulated Nonclinical Studies, University of Texas Medical Branch, Galveston, TX, USA
| | - Gregg N Milligan
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
- Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA
- World Health Organization Collaborating Center for Vaccine Research, Evaluation and Training on Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX, USA
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, USA
| | - Lisa M Reece
- Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA
- World Health Organization Collaborating Center for Vaccine Research, Evaluation and Training on Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX, USA
| | - Joachim Hombach
- Initiative for Vaccine Research, Department of Immunization, Vaccines and Biologicals, World Health Organization, Geneva, Switzerland
| | - Alan DT Barrett
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
- Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX, USA
- World Health Organization Collaborating Center for Vaccine Research, Evaluation and Training on Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX, USA
| |
Collapse
|
33
|
Affiliation(s)
- David O Freedman
- From the William C. Gorgas Center for Geographic Medicine, Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham (D.O.F.); the Division of Infectious Diseases, Mount Auburn Hospital, Cambridge, MA (L.H.C.); the Department of Medicine, Harvard Medical School, Boston (L.H.C.); and the Division of Infectious Diseases, Emory University, Atlanta (P.E.K.)
| | - Lin H Chen
- From the William C. Gorgas Center for Geographic Medicine, Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham (D.O.F.); the Division of Infectious Diseases, Mount Auburn Hospital, Cambridge, MA (L.H.C.); the Department of Medicine, Harvard Medical School, Boston (L.H.C.); and the Division of Infectious Diseases, Emory University, Atlanta (P.E.K.)
| | - Phyllis E Kozarsky
- From the William C. Gorgas Center for Geographic Medicine, Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham (D.O.F.); the Division of Infectious Diseases, Mount Auburn Hospital, Cambridge, MA (L.H.C.); the Department of Medicine, Harvard Medical School, Boston (L.H.C.); and the Division of Infectious Diseases, Emory University, Atlanta (P.E.K.)
| |
Collapse
|
34
|
Status of vaccine research and development of vaccines for dengue. Vaccine 2016; 34:2934-2938. [DOI: 10.1016/j.vaccine.2015.12.073] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/30/2015] [Indexed: 11/21/2022]
|
35
|
Lodha R, Kabra SK. Dengue Infection: Challenges and Way Forward. Indian J Pediatr 2015; 82:1077-9. [PMID: 26590155 DOI: 10.1007/s12098-015-1946-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 11/03/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Sushil K Kabra
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India
| |
Collapse
|