Viruses... They are trying to transform us, we are trying to destroy them. And no one ever wondered if it could be different... Could a global pandemic change this? And at the same time let us understand that humanity is not the only intelligent race on this planet and that those whom we displaced in ancient times may try to take revenge, using the fact that their body is much more resistant to disease than the human? The book predicted some methods of combating infectious diseases, which later appeared in reality. So, perhaps, other methods described in it and not yet implemented are waiting for their researchers.