**3. Conclusions**

In the last decades, a large number of research regarding herpesviruses have been published. Although a considerable number of conditions are irrefutably linked to a specific type of herpesvirus, many others remain well less explained and with lack of cause-effect definitions. It is clear that further studies must be designed with the aim of better understanding each hypothesis. The *status quo* about the knowledge about the human herpesvirus simples, varicella-zoster virus, and cytomegalovirus was presented and discussed in this book.

### **Conflict of interest**

The author declares that there is no conflict of interest.

*Human Herpesvirus Infection - Biological Features, Transmission, Symptoms, Diagnosis...*
