Corowa-kun: A messenger app chatbot delivers COVID-19 vaccine information, Japan 2021.

Background: There is a long history in Japan of public concerns about vaccine adverse events. Few studies have assessed how mobile messenger apps affect COVID-19 vaccine hesitancy.

Methods: Corowa-kun, a free chatbot, was created on February 6, 2021 in LINE, the most popular messenger app in Japan.

Febrile neutropenia in a patient with non-small-cell lung cancer treated with atezolizumab: A case report.

Hematological immune-related adverse events (hem-irAEs) related to immunotherapy have not been extensively characterized, and there is no report of neutropenia caused by atezolizumab administration. Herein, we report a case of febrile neutropenia caused by a hem-irAEs due to atezolizumab, which was treated with granulocyte-colony stimulating factor (G-CSF) and antibiotic prophylaxis. It is important that oncologists be aware of the hematological toxicities of immune checkpoint inhibitors (ICIs).