Universal Journal of Public Health Vol. 10(6), pp. 596 - 605
DOI: 10.13189/ujph.2022.100607
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A Compartmental Model for Assessing Effects of COVID-19 Vaccination in Thailand

Chadaphim Photphanloet ¹, Siriprapa Ritraksa ¹, Sherif Eneye Shuaib ², Arthit Intarasit ¹, Pakwan Riyapan ^1,*
1 Department of Mathematics and Computer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, 94000, Thailand
² Department of Mathematics and Statistics, York University, Toronto, ON M3J 1P3, Canada

ABSTRACT

A dynamical model for COVID-19 spread relating to non-pharmaceutical interventions and vaccination is mathematically generated by adding a gradual vaccination compartment for the susceptible population and considering only a symptomatic infectious stage. In our model, there are seven compartments dividing a given population into susceptible , vaccinated , exposed , infected , quarantined , recovered and death groups, respectively. Then, theoretically analysis is given by investigating the COVID-19 free and endemic equilibrium points, and computing the vaccination reproduction number of this model denoted as using the next generation matrix. If , then the COVID-19 transmission increases exponentially and depends on vaccine efficacy. On the other hand, if , then there occurs the COVID-19 disease eradication. The risk from infection can be importantly reduced whenever the intake of COVID-19 vaccines exceeds one dose. The numerical results reveal that the nonpharmaceutical ways and the administered COVID-19 vaccines can be effective against the current variants of COVID-19, and the additional efforts such as a third vaccine booster shot should be considered and implemented to greatly mitigate the risks of emerging variants of the COVID-19 virus. Moreover, combining different types of COVID-19 vaccines can be appeared as a possible way to give better protection against COVID-19 as well.

KEYWORDS
COVID-19 Vaccination, Disease-free Equilibrium, Endemic Equilibrium, Mathematical Model, Vaccination Reproduction Number

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Chadaphim Photphanloet , Siriprapa Ritraksa , Sherif Eneye Shuaib , Arthit Intarasit , Pakwan Riyapan , "A Compartmental Model for Assessing Effects of COVID-19 Vaccination in Thailand," Universal Journal of Public Health, Vol. 10, No. 6, pp. 596 - 605, 2022. DOI: 10.13189/ujph.2022.100607.

(b). APA Format:
Chadaphim Photphanloet , Siriprapa Ritraksa , Sherif Eneye Shuaib , Arthit Intarasit , Pakwan Riyapan (2022). A Compartmental Model for Assessing Effects of COVID-19 Vaccination in Thailand. Universal Journal of Public Health, 10(6), 596 - 605. DOI: 10.13189/ujph.2022.100607.