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Mba IE, Sharndama HC, Anyaegbunam ZKG, Anekpo CC, Amadi BC, Morumda D, Doowuese Y, Ihezuo UJ, Chukwukelu JU, Okeke OP. Vaccine development for bacterial pathogens: Advances, challenges and prospects. Trop Med Int Health 2023; 28:275-299. [PMID: 36861882 DOI: 10.1111/tmi.13865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The advent and use of antimicrobials have played a key role in treating potentially life-threatening infectious diseases, improving health, and saving the lives of millions of people worldwide. However, the emergence of multidrug resistant (MDR) pathogens has been a significant health challenge that has compromised the ability to prevent and treat a wide range of infectious diseases that were once treatable. Vaccines offer potential as a promising alternative to fight against antimicrobial resistance (AMR) infectious diseases. Vaccine technologies include reverse vaccinology, structural biology methods, nucleic acid (DNA and mRNA) vaccines, generalised modules for membrane antigens, bioconjugates/glycoconjugates, nanomaterials and several other emerging technological advances that are offering a potential breakthrough in the development of efficient vaccines against pathogens. This review covers the opportunities and advancements in vaccine discovery and development targeting bacterial pathogens. We reflect on the impact of the already-developed vaccines targeting bacterial pathogens and the potential of those currently under different stages of preclinical and clinical trials. More importantly, we critically and comprehensively analyse the challenges while highlighting the key indices for future vaccine prospects. Finally, the issues and concerns of AMR for low-income countries (sub-Saharan Africa) and the challenges with vaccine integration, discovery and development in this region are critically evaluated.
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Affiliation(s)
- Ifeanyi Elibe Mba
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
| | | | - Zikora Kizito Glory Anyaegbunam
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria
- Institute for Drug-Herbal Medicine-Excipient Research and Development, University of Nigeria, Nsukka, Nigeria
| | - Chijioke Chinedu Anekpo
- Department of Ear Nose and Throat, College of Medicine, Enugu State University of Science and Technology, Enugu, Nigeria
| | - Ben Chibuzo Amadi
- Pharmaceutical Technology and Industrial Pharmacy, University of Nigeria, Nsukka, Nigeria
| | - Daji Morumda
- Department of Microbiology, Federal University Wukari, Wukari, Taraba, Nigeria
| | - Yandev Doowuese
- Department of Microbiology, Federal University of Health Sciences, Otukpo, Nigeria
| | - Uchechi Justina Ihezuo
- Department of Microbiology, University of Nigeria, Nsukka, Nigeria
- Institute for Drug-Herbal Medicine-Excipient Research and Development, University of Nigeria, Nsukka, Nigeria
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Naranjo L, Domínguez E, Rodriguez C, Chandler R, Belén Arauz A, Barahona de Mosca I, Hernández T, Coto F, Ramirez Chavez J, Sandoval N, Castrejón MM, Leal I, Guzman-Holst A. Adult immunization practices, challenges and opportunities in Central America and the Caribbean: Advisory board proceedings. Hum Vaccin Immunother 2022; 18:2129236. [PMID: 36469706 PMCID: PMC9762812 DOI: 10.1080/21645515.2022.2129236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
As individuals age, they become increasingly prone to infectious diseases, many of which are vaccine-preventable diseases (VPDs). Adult immunization has become a public health priority in the modern era, yet VPDs vaccination rates for adults are low worldwide. In Central America and Caribbean, national recommendations and vaccination practices in adults differ across countries, and adult vaccination coverage data are limited. An advisory board comprised infectious disease experts, pulmonologists, geriatricians, occupational health, and public health professionals for Central America and Dominican Republic was convened to: a) describe adult immunization practices in these countries; b) discuss challenges and barriers to adult vaccination; and c) find strategies to increase awareness about VPDs. The advisory board discussions reflect that national immunization guidelines typically do not include routine vaccine recommendations for all adults, but rather focus on those with risk factors. This is the case for influenza, pneumococcal, and hepatitis B immunizations. Overall, knowledge lacks about the VPD burden among health-care professionals and the general public. Even more, there is insufficient information on vaccinology for students in medical schools. Actions from the responsible authorities - medical schools and scientific societies which can advocate for vaccination and a better knowledge in vaccinology - can help address these issues. A preventive medicine culture in the workplace may contribute to the advancement of public opinion on vaccination. Promoting vaccine education and research could be facilitated via working groups formed by disease experts, public and private sectors, and supranational authorities, in an ethical and transparent manner.
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Affiliation(s)
- Laura Naranjo
- SNI- Senacyt Panama, Panama City, Panama,GSK, Panama City, Panama,CONTACT Laura Naranjo Punta Pacífica, Oceanía Business Plaza Torre 1000, Piso 34, Panama City, Panama
| | - Elidia Domínguez
- GSK, Panama City, Panama,Elidia Domínguez Punta Pacífica, Oceanía Business Plaza, Torre 1000, Piso 34Panama City, Panama
| | - Carlos Rodriguez
- Servicio de Infectología Instituto de Oncología “Dr Heriberto Pieter”, Santo Domingo, Dominican Republic,Hospital Central de las Fuerzas Armadas, Santo Domingo, Dominican Republic
| | | | | | | | | | - Fernando Coto
- Hospital Nacional de Geriatría y Gerontología Caja Costarricense de Seguro Social, San José, Costa Rica
| | | | - Nancy Sandoval
- Universidad Rafael Landívar, Hospital Roosevelt, Guatemala City, Guatemala
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Grassi T, Bagordo F, Savio M, Rota MC, Vitale F, Arghittu A, Sticchi L, Gabutti G. Sero-Epidemiological Study of Bordetella pertussis Infection in the Italian General Population. Vaccines (Basel) 2022; 10:vaccines10122130. [PMID: 36560541 PMCID: PMC9782223 DOI: 10.3390/vaccines10122130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/01/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
A multicenter study was conducted to estimate the prevalence of pertussis IgG antibodies (anti-PTx) in the Italian population. Serum samples (4154) collected in the years 2019−2020 from subjects aged 6 to 90 years were tested. The anti-PTx IgG levels were determined by ELISA test. The limit of detection was 5 IU/mL (International Units per milliliter); values ≥ 40 IU/mL and ≥100 IU/mL indicate an infection that has occurred in recent years and a recent infection (occurred during the last year), respectively. The mean concentration of anti-PTx IgG antibodies in the tested samples was 13 IU/mL; 1.0% of subjects had a titer ≥ 100 IU/mL, 5.3% a titer between 40 and 100 IU/mL, and 38.9% a titer < 5 IU/mL. The mean antibody concentration was significantly higher in males than in females. The age group 25−39 years had the lowest percentage of negative subjects (36.9%) and the highest prevalence of subjects with antibody titers ≥ 100 IU/mL (1.3%). In the age group ≥ 65 years, the prevalence of subjects with titers between 40 and 100 IU/mL (6.7%) and the percentage of negative subjects (44.8%) was higher than in the other age groups. The results highlight the possible role of adolescents and adults in the transmission of B. pertussis.
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Affiliation(s)
- Tiziana Grassi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy
| | - Francesco Bagordo
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari, 70121 Bari, Italy
| | - Marta Savio
- Post-Graduate School of Hygiene and Preventive Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Maria Cristina Rota
- Department of Infectious Diseases, Italian Institute of Health (ISS), 00161 Roma, Italy
| | - Francesco Vitale
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro”, University of Palermo, 90127 Palermo, Italy
| | - Antonella Arghittu
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | - Laura Sticchi
- Department of Health Sciences, University of Genova, 16132 Genova, Italy
| | - Giovanni Gabutti
- National Coordinator of the Working Group “Vaccines and Immunization Policies”, Italian Society of Hygiene, Preventive Medicine and Public Health, 16030 Cogorno, Italy
- Correspondence: ; Tel.: +39-347-8889342
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Calabrò GE, D’Ambrosio F, Fallani E, Ricciardi W. Influenza Vaccination Assessment according to a Value-Based Health Care Approach. Vaccines (Basel) 2022; 10:vaccines10101675. [PMID: 36298540 PMCID: PMC9612276 DOI: 10.3390/vaccines10101675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/02/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022] Open
Abstract
Background: Seasonal influenza has a considerable public health impact, and vaccination is the key to preventing its consequences. Our aim was to describe how the value of influenza vaccination is addressed in the scientific literature considering a new value framework based on four pillars (personal, allocative, technical, and societal value). Methods: A systematic review was conducted by querying three databases. The analysis was performed on international studies focused on influenza vaccination value, and the four value pillars were taken into consideration for their description. Results: Overall, 40 studies were considered. Most of them focused on influenza vaccination in the general population (27.5%), emphasizing its value for all age groups. Most studies addressed technical value (70.4%), especially in terms of economic models and cost drivers to be considered for the economic evaluations of influenza vaccines, and societal value (63%), whereas few dealt with personal (37%) and allocative values (22.2%). Conclusions: The whole value of influenza vaccination is still not completely recognized. Knowledge and communication of the whole value of influenza vaccination is essential to guide value-based health policies. To achieve this goal, it is necessary to implement initiatives that involve all relevant stakeholders.
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Affiliation(s)
- Giovanna Elisa Calabrò
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- VIHTALI (Value in Health Technology and Academy for Leadership & Innovation), Spinoff of Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Correspondence:
| | - Floriana D’Ambrosio
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Elettra Fallani
- Department of Life Sciences, University of Siena, 53100 Siena, Italy
- Seqirus S.R.L., Via del Pozzo 3/A, San Martino, 53035 Monteriggioni, Italy
| | - Walter Ricciardi
- Section of Hygiene, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
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Blasi F, Aliberti S. Vaccinations: What's best? Pulmonology 2022; 28:419-420. [PMID: 36180351 DOI: 10.1016/j.pulmoe.2022.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 10/14/2022] Open
Affiliation(s)
- F Blasi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation University of Milan, Milan, Italy.
| | - S Aliberti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072 Pieve Emanuele, Milan, Italy; IRCCS Humanitas Research Hospital, Respiratory Unit, Via Manzoni 56, 20089 Rozzano, Milan, Italy
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Childers-Strawbridge S, Eiden AL, Nyaku MK, Bhatti AA. Attitudes and Beliefs around the Value of Vaccination in the United States. Vaccines (Basel) 2022; 10:vaccines10091470. [PMID: 36146548 PMCID: PMC9501875 DOI: 10.3390/vaccines10091470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/24/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Despite the benefits of immunization, differences in attitudes persist toward vaccines. We captured individuals’ perceptions of vaccines and vaccination across the United States (US) to inform vaccine-related policy development. A survey was completed by 5000 respondents from 10 states. Respondents were screened for inclusion, which included individuals ≥ 18 years of age that had received a vaccine or were unvaccinated but indicated a favorable or neutral attitude towards vaccinations. Participants were excluded if they indicated they did not support the idea of vaccinations. Questions explored perceptions of vaccines for all age groups. Among unvaccinated individuals, the most common concerns were about safety (38%). Most respondents (95%) highlighted the importance of state immunization programs for disease prevention. Access to health and immunization records and immunization information systems were important to 96% and 88% of respondents, respectively, for future health planning. Doctors and healthcare professionals (HCPs) were considered trusted sources for vaccine information (95%). Overall, respondents recognized the importance of vaccination, but documented concerns among the unvaccinated indicated a need for greater promotion regarding vaccine safety. Doctors and HCPs, as trusted information sources, should continue to and increasingly advocate for the importance of immunization to increase vaccine uptake.
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Bianchi FP, Stefanizzi P, Brescia N, Lattanzio S, Martinelli A, Tafuri S. COVID-19 vaccination hesitancy in Italian healthcare workers: a systematic review and meta-analysis. Expert Rev Vaccines 2022; 21:1289-1300. [PMID: 35757890 DOI: 10.1080/14760584.2022.2093723] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION As for other vaccines, vaccination hesitancy may be a determining factor in the success (or otherwise) of the COVID-19 immunization campaign in healthcare workers (HCWs). AREAS COVERED To estimate the proportion of HCWs in Italy who expressed COVID-19 vaccine hesitancy, we conducted a systematic review of the relevant literature and a meta-analysis. Determinants of vaccine compliance and options suggested by these studies to address vaccine hesitancy among HCWs were also analyzed. Seventeen studies were included in the meta-analysis and systematic review, selected from scientific articles available in the MEDLINE/PubMed, Google Scholar and Scopus databases between January 1, 2020 and January 25, 2022. The vaccine hesitancy rate among HCWs was 13.1% (95%CI: 6.9-20.9%). The vaccine hesitancy rate among HCWs investigated before and during the vaccination campaign was 18.2% (95%CI=12.8-24.2%) and 8.9% (95%CI=3.4-16.6%), respectively. That main reasons for vaccine hesitation were lack of information about vaccination, opinion that the vaccine is unsafe, and fear of adverse events. EXPERT OPINION Despite strategies to achieve a greater willingness to immunize in this category, mandatory vaccination appears to be one of the most important measures that can guarantee the protection of HCWs and the patients they care for.
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Affiliation(s)
| | - Pasquale Stefanizzi
- Department of Biomedical Science and Human Oncology, Aldo Moro University of Bari
| | - Nazario Brescia
- Department of Biomedical Science and Human Oncology, Aldo Moro University of Bari
| | - Sabrina Lattanzio
- Department of Biomedical Science and Human Oncology, Aldo Moro University of Bari
| | - Andrea Martinelli
- Department of Biomedical Science and Human Oncology, Aldo Moro University of Bari
| | - Silvio Tafuri
- Department of Biomedical Science and Human Oncology, Aldo Moro University of Bari
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