Efforts at COVID-19 Vaccine Development: Challenges and Successes

Haque, Azizul; Pant, Anudeep B.

doi:10.3390/vaccines8040739

Cited by 105 publications

(81 citation statements)

References 76 publications

(68 reference statements)

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“…For instance, there are vaccines that require special storage and transportation, and this affects the availability of the vaccine. Moreover, the current number of vaccine shots are not enough to vaccinate the whole world population [29,80,[158][159][160].…”

Section: Discussionmentioning

confidence: 99%

Analysis of Key Factors of a SARS-CoV-2 Vaccination Program: A Mathematical Modeling Approach

2021

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The administration of vaccines against the coronavirus disease 2019 (COVID-19) started in early December of 2020. Currently, there are only a few approved vaccines, each with different efficacies and mechanisms of action. Moreover, vaccination programs in different regions may vary due to differences in implementation, for instance, simply the availability of the vaccine. In this article, we study the impact of the pace of vaccination and the intrinsic efficacy of the vaccine on prevalence, hospitalizations, and deaths related to the SARS-CoV-2 virus. Then we study different potential scenarios regarding the burden of the COVID-19 pandemic in the near future. We construct a compartmental mathematical model and use computational methodologies to study these different scenarios. Thus, we are able to identify some key factors to reach the aims of the vaccination programs. We use some metrics related to the outcomes of the COVID-19 pandemic in order to assess the impact of the efficacy of the vaccine and the pace of the vaccine inoculation. We found that both factors have a high impact on the outcomes. However, the rate of vaccine administration has a higher impact in reducing the burden of the COVID-19 pandemic. This result shows that health institutions need to focus on increasing the vaccine inoculation pace and create awareness in the population about the importance of COVID-19 vaccines.

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Section: Discussionmentioning

confidence: 99%

Analysis of Key Factors of a SARS-CoV-2 Vaccination Program: A Mathematical Modeling Approach

2021

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“…At present, various SARS-CoV-2 vaccines with different characteristics, such as inactivated vaccine, subunit vaccine, DNA vaccine and mRNA vaccine, are under development at different stages [ 5 , 6 ]. Several vaccines have entered Phase III clinical trials, and the safety and effectiveness of these vaccines will be tested via a large-scale vaccination of subjects [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Willingness to Receive SARS-CoV-2 Vaccination and Associated Factors among Chinese Adults: A Cross Sectional Survey

Gan

Chen

et al. 2021

IJERPH

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Vaccination is a key strategy to prevent the pandemic caused by the coronavirus disease 2019 (COVID-19). This study aims to investigate the willingness of Chinese adults to be vaccinated against COVID-19 and further explore the factors that may affect their willingness. We used a self-design anonymous questionnaire to conduct an online survey via the Sojump. A total of 1009 valid questionnaires were analyzed. The age of the participants ranged from 18 to 74. Among them, 609 (60.4%, 95%CI: 57.4–63.4%) were willing to receive the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine. Logistic regression analysis results showed that the age of 30-49 (OR = 2.042, 95%CI: 1.098–3.799), universities and colleges education (OR = 1.873, 95% CI = 1.016–3.451), master degree or above education (OR = 1.885, 95%CI = 1.367–2.599), previous influenza vaccination history (OR = 2.176, 95%CI: 1.474–3.211), trust in the effectiveness of the vaccine (OR = 6.419, 95%CI: 3.717–11.086), and close attention to the latest news of the vaccine (OR = 1.601, 95%CI: 1.046–2.449) were facilitative factors that affected their willingness to be vaccinated. More than half of the adults in China would be willing to receive a SARS-CoV-2 vaccine. Middle-aged people with higher education, those who had been vaccinated against influenza, and those who believed that COVID-19 vaccine was effective and paid close attention to it were more willing to be vaccinated. Our findings can provide reference for the implementation of vaccination and the prevention of COVID-19 in China. More studies are needed after the vaccine is launched.

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“…These concerns with the unintended consequences of COVID-19, coupled with the socioeconomic consequences of COVID-19 along with growing morbidity and mortality rates, has resulted in pharmaceutical companies, governments, funding agencies worldwide investing considerable efforts and resources in accelerated research and development of vaccines as a viable future prevention measure once the gene sequence became known (30)(31)(32)(33)(34). As of 16 June 2021, there were 287 vaccine candidates, 185 in the pre-clinical phase and 102 in the clinical phase (35).…”

Section: Introductionmentioning

confidence: 99%

Awareness and Acceptance of COVID-19 Vaccines among Pharmacy Students in Zambia: The Implications for Addressing Vaccine Hesitancy

Mudenda

Mukosha

Meyer

et al. 2021

Preprint

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Background: Several vaccines have been developed and administered since coronavirus disease 2019 (COVID-19) was declared a pandemic in March 2020. In April 2021, the authorities in Zambia administered the first doses of the Oxford-AstraZeneca® COVID-19 vaccine. However, little is known about the awareness and acceptability of the vaccines among the Zambian population. This study was undertaken to address this starting with undergraduate pharmacy students in Zambia. Materials and methods: A descriptive cross-sectional survey was conducted among 326 undergraduate pharmacy students in Zambia using an online semi-structured questionnaire from 12th to 25th April 2021 and analysed using Stata version 16. Test of associations were undertaken using Pearson chi-square test or Fisher's exact test as appropriate. The multivariable logistic regression was used to investigate the determinants of awareness and acceptability. All statistical tests were performed at a 5% significance level and 95% confidence level. Results: Among 326 participants, 98.8% were aware of the COVID-19 vaccination programme but only 24.5% would accept the vaccine should it be made available to them. Awareness of the COVID-19 vaccine was influenced by religious beliefs (aOR=0.01, 95% CI: 0.01 to 0.20, p=0.004). Being male (aOR=1.78, 95% CI: 1.05 to 3.02, p=0.034) and single (aOR=2.61, 95% CI: 1.04 to 6.55, p=0.041) was associated with higher odds of accepting the vaccine. Being unemployed (aOR=0.31, 95% CI: 0.15 to 0.66, p=0.002) was associated with lower odds of vaccine acceptancy. Barriers to acceptance of the vaccine were possible side effects (78.5%) and scepticism about its effectiveness to prevent COVID-19 (10.2%). Conclusion: There was significant vaccine hesitancy towards COVID-19 vaccines among Zambian pharmacy students despite their awareness about the vaccines. Health authorities must work collaboratively with the Universities and other institutions to mitigate vaccine hesitancy, especially with pharmacy students a key part of the future healthcare workforce overseeing disease prevention strategies. These findings can help guide future interventions to address vaccine hesitancy to reduce future transmission rates of this virus.

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Efforts at COVID-19 Vaccine Development: Challenges and Successes

Cited by 105 publications

References 76 publications

Analysis of Key Factors of a SARS-CoV-2 Vaccination Program: A Mathematical Modeling Approach

Analysis of Key Factors of a SARS-CoV-2 Vaccination Program: A Mathematical Modeling Approach

Willingness to Receive SARS-CoV-2 Vaccination and Associated Factors among Chinese Adults: A Cross Sectional Survey

Awareness and Acceptance of COVID-19 Vaccines among Pharmacy Students in Zambia: The Implications for Addressing Vaccine Hesitancy

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