Table 1 Characteristics of the included studies

1

Calina, D. 2021 [4]

Describing the ethical considerations of trial & Intentionally infecting healthy volunteers

Review

Vaccine production

*

*

2

Dal-Ré, R. 2021 [16]

Challenges of equitable distribution and clinical trials of vaccines in low-income countries

Review

Vaccine production

*

*

3

Daverio, M. 2021 [10]

An overview of ethical and regulatory issues & Vaccine research and the consequences of informed consent

Review

Vaccine production

*

*

*

4

Greco, D. B. 2021 [12]

Ethical limitations on using placebo and access to Covid-19 vaccines

Review

Vaccine production & distribution

*

*

*

5

John, T. J. [5]

Covid-19 vaccine trials and ethics

Review

Vaccine production & distribution

*

*

*

6

Kashte, S. 2021 [17]

Challenges and implications of the development of vaccines at present and in the future

Review

Vaccine production

*

*

7

Monrad, J. T. 2020 [18]

Ethical considerations for vaccine trials

Review

Vaccine production

*

*

8

Vashishtha, V. M. 2021 [2]

Emergency use authorization of Covid-19 vaccines

Review

Vaccine production

*

*

*

*

9

Wibawa, T. 2021 [19]

Ethical considerations of research and development of Covid-19 vaccines

Review

Vaccine production

*

*

*

10

Brusa, M. 2021 [20]

Vaccine policymaking for children in emergencies

Review

Vaccine production & distribution

*

*

*

11

Dembinski, L. 2021 [21]

Vaccination in children and adolescents

Review

Vaccine distribution

*

*

*

12

Hamidian Jahromi, A. 2021 [22]

Ethical considerations regarding mandatory vaccination for healthcare providers

Review

Vaccine distribution

*

*

*

13

Hughes, K. 2021 [23]

Ethical considerations and fair prioritization of vaccines in HCWs

Review

Vaccine distribution

*

14

Kates, O. S. 2021 [24]

Ethical considerations of vaccination for transplant center staff and patients

Review

Vaccine distribution

*

*

*

*

15

Bolcato, M. 2021 [13]

Fair distribution of anti-COVID-19 vaccines resources

Review

Vaccine distribution

*

16

Carson, S. L. 2021 [25]

Vaccine Challenges of multiethnic societies

Qualitative

Vaccine distribution

*

*

*

*

17

Adejumo, O. A. 2021 [26]

Global health coverage approach and justice in the vaccine distribution plan

Review

Vaccine distribution

*

18

Binagwaho, A. 2021 [27]

Management of ethical considerations in vaccination

Review

Vaccine production & Distribution

*

*

*

19

Martin-Fumadó, C. 2021 [28]

Ethical considerations of vaccination in health care providers

Review

Vaccine distribution

*

*

20

Reis-Dennis, S. 2021 [29]

Ethical considerations of vaccines in health care providers

Review

Vaccine distribution

*

21

Savulescu, J. 2021 [30]

Ethical considerations of compulsory vaccination in children

Review

Vaccine distribution

*

*

*

22

Thorsteinsdottir, B. 2021 [31]

Ethical analysis of prioritizing HCWs for access to the vaccine

Review

Vaccine distribution

*

23

Williamson, L. 2021 [32]

Ethical considerations in the vaccination of children

Review

Vaccine distribution

*

*

24

Brown, R. C. H. 2021 [33]

Challenges and ethical considerations of immunity passports

Review

Vaccine distribution

*

*

25

Giubilini, A. 2021 [9]

Ethical considerations of vaccination

Review

Vaccine distribution

*

*

*

*

26

McClung, N. 2021 [34]

Describing the four ethical principles of the Advisory Committee on Immunization Practices (ACIP)

Review

Vaccine distribution

*

*

27

Kumar, V. 2021 [6]

Ethical considerations of vaccine trials

Review

Vaccine production & distribution

*

*

*

*

28

Mirocha, L. 2021 [35]

Ethical considerations of vaccine distribution

Review

Vaccine distribution

*

29

Sharma, P. 2021 [8]

Ethical considerations of vaccination

Review

Vaccine distribution

*

*

*

*

30

Sharun, K. 2021 [36]

Ethical considerations of immunity passports

Review

Vaccine distribution

*

*

31

Voo, T. C. 2021 [37]

Ethical considerations of immunity passports

Review

Vaccine distribution

*

*

*

32

Wang, D. W. L. 2021 [3]

Ethical considerations of mandatory vaccination

Review

Vaccine distribution

*

*

*

33

Woodhead, C. 2021 [38]

Ethical considerations of racial and ethnic group vaccination

Qualitative

Vaccine distribution

*

*

*

*

34

Zhu, X. G. 2021 [39]

Impact of racism and inequality on equitable vaccine distribution

Review

Vaccine distribution

*

*

*

*

35

Emanuel, E. J. 2020 [14]

An ethical framework for global vaccine distribution

Review

Vaccine distribution

*

*

*

36

Gupta, R. 2021 [1]

Ethical issues of vaccine distribution

Review

Vaccine distribution

*

*

37

Liu, Y. 2020 [40]

Providing an ethical framework for fair global vaccine distribution

Review

Vaccine distribution

*

38

McMahon, A. 2021 [41]

Fair global access to vaccines, medicines, and diagnostic equipment and the role of patents

Review

Vaccine production & distribution

*

39

Rhodes, R. 2021 [42]

Ethical considerations of justice in vaccine prioritization

Review

Vaccine distribution

*

40

Hughes, J. A. 2020 [43]

Challenges and implications of new vaccine technologies

Conference article

Vaccine distribution

*

*

41

WHO, 2021 [44]

Ethical considerations of Covid-19 and vaccination

Report

Vaccine distribution

*

42

WHO. 2021 [45]

Review the ethical considerations and dilemmas of decision-making to respond to the epidemic

Report

Vaccine distribution

*

43

WHO, 2020 [46]

Ethical considerations of trials and emergency use of vaccines

Report

Vaccine production

*

*