"Biological threat" is a book that immerses the reader in the world of the apocalypse caused by a dangerous virus that spreads quickly and mercilessly among the population. Exciting events and tense moments haunt the characters throughout the story, making every step and every decision fateful. The book "Biological Threat" leaves a fascinating mark in the heart of the reader, reminding of the vulnerability of the human race to the power of nature and the consequences of our own actions.