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Equitable vaccine distribution is a global issue that has received increasing attention, especially since the increasing need for vaccines in the face of modern pandemics. This study aims to analyze the inequality in vaccine distribution and the factors influencing vaccine hesitancy through a descriptive qualitative approach, utilizing literature studies and supporting data in the form of graphs. The analysis results show that high-income countries have significantly greater access to vaccines than middle- and low-income countries, creating inequalities that impact public health protection. Furthermore, levels of vaccine hesitancy were found to vary across social groups, with adolescents being the group with the highest rate of rejection due to the influence of misinformation and low trust in health institutions. These findings confirm that the success of a vaccination program is determined not only by the availability of equitable distribution but also by public acceptance, which is influenced by social, psychological, and ethical factors. Overall, this study emphasizes the importance of applying bioethical principles such as justice, beneficence, and autonomy in formulating effective and inclusive vaccination policies.

Advances in in vitro fertilization (IVF) technology have expanded the scope of reproductive interventions, from simply addressing infertility to enabling genetic selection of embryos through preimplantation genetic testing (PGT). This advancement not only enables the detection and prevention of severe genetic diseases, but also opens up opportunities for the selection of non-medical traits such as intelligence potential, physical characteristics, or specific polygenic scores, giving rise to the phenomenon of “designer babies.” This development presents complex bioethical issues related to human dignity, social justice, biological safety, and the right of children to have an open future. This paper aims to analyze the ethical issues of selecting non-medical characteristics of embryos in modern IVF through a literature review using a biomedical ethics framework, including the principles of autonomy, beneficence, non-maleficence, and justice. The findings show that the application of technology for non-medical purposes is still fraught with scientific risks, biological uncertainties, the potential for commercialization of humans, and the threat of socio-biological inequality. This analysis emphasizes the need to restrict the use of technology to clear medical indications, increase regulation and governance, and involve the public in policy formulation. Thus, advances in reproductive technology must be accompanied by strict ethical considerations so as not to sacrifice individual dignity and the value of justice in society.

RFID (Radio Frequency Identification)-based biohacking has evolved as a body modification practice that integrates technology directly into human biology. While the practice has historical roots dating back to World War II when RFID was used to identify aircraft, its development toward human implantation began in the late 20th century and has become more widespread with society's increasing reliance on digital technology. Analysis of the principle of beneficence reveals that although RFID implantation can increase user convenience, comfort and security, these benefits are not yet fully supported by adequate scientific evidence regarding long-term safety. Meanwhile, the principle of non-maleficence highlights the risks of infection, tissue damage, interference with radiological examinations, and publications regarding other medical complications resulting from implantation, which is generally performed by non-medical personnel. Through historical, technical, and ethical reviews, this research emphasizes the need for a clearer regulatory framework, increased bioethical literacy, and the involvement of healthcare professionals in implantation to ensure that technological developments do not compromise human safety and well-being