Dear colleagues, The open access journal Pathogens (ISSN 2076-0817, IF 3.018) is pleased to announce that we have launched a new Special Issue entitled "Oncolytic Mechanisms of Viruses: Effect on Tumor Cells and Role of the Tumor Microenvironment." I am serving as Guest Editor for this issue. Given the depth of your expertise in this field, I would like to cordially invite you to contribute an article to the Special Issue. For more information on the issue, please visit the Special Issue website at the link Papers may be submitted from now until 30 October 2021 as papers will be published on an ongoing basis. Submitted papers should not be under consideration for publication elsewhere. We also encourage authors to send a short abstract or tentative title to the Editorial Office in advance (Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.). In the hope that this invitation receives your favorable consideration, we look forward to our future collaboration. Kind regards, Guest Editor Attilio Corradi