Paris John is a medical physicist with international training and rich working experience in hospital environments in Greece.

He has developed and applied techniques in radiation control and has considerable knowledge of radiation accidents and disasters.

In collaboration with the National School of Public Health of Greece, he has gained important experience in public health emergencies and through participation in teaching programmes such as computer simulation and health disaster management.

He believes more cooperative efforts should be made since we live in a world full of risks, from solar burns and drugs to communicable diseases and car accidents. Disasters strike severely, as in Fukushima, Japan, and Ukraine, with military and sociopolitical challenges unsolved. A deep understanding of each case demands interdisciplinary cooperation.

Worth mentioning is his participation in the development of BIMS (Balkan Incident Management System), a useful communication tool during complex response interactions in disaster events.

He studied the complexity and multiple dimensions of disasters in the region. He worked on the alarming Balkan background of rising infectious diseases, reflecting a context of interregional and global polarisation of local population well-being and mostly vulnerability. The cost of malworking Balkan relations proved horrible, and even now it is not known precisely.

Some of his work has been presented through the World Association of Disaster Emergency Medicine in the Balkans, Europe, and Israel.

Other activities include the development of disaster scenarios covering topics from nuclear disasters to telemedicine and from cybercrime to bioterrorism. New agents being uncontrollable makes it impossible for the world to assume the best-case scenario. Governments must take responsibility for the risk and act accordingly. The sooner they start, the better. The only conclusion that can be reached is that the worst-case scenario will surpass anything ever experienced before. The optimal preparation of society and the minimization of population vulnerability through public health policy, measures, and practice can lead to an optimistic scenario at its best. At worst, it is doubtful whether any health service in Europe will be able to cope with it.

Novels Terror in the Balkans and the advanced (prophetic) trilogy Terror in Macedonia are a few titles of his work. He showed how bad peculiarities will affect human setup, and he explained that difficulties depend on inexistent cooperative mechanisms. He tries this way to activate the imagination of the people for the new generation of contaminants emerging amid uncontrollable climate change.

His proposal is to carefully study current hot topics with modern, realistic insights, which could lead to revolutionary changes in disaster response thinking in public health. He asserts that, like a forest fire, the ongoing epidemic can change direction suddenly.

Supporting vulnerable groups in the suffering society of Ukraine is the primary objective of the response guide he created.

The threats that he researched pose a risk that is not simple but rather complex and variable. Additionally, the public's subjective perception of risk for a particular aggressive agent makes matters more complicated. Finally, our society's response to threats should not only focus on removing the threat but also on working in an environment of principles. His work in the Ukrainian case proves that.