Many cancer patients in Japan are growing concerned about their vulnerability to the novel coronavirus after the recent death of an actress highlighted the risk of treatment weakening the immune system against infection.The death last month of Kumiko Okae, 63, following a battle with breast cancer, has fueled anxiety after her office released a statement saying her COVID-19 symptoms may have become serious due to radiation therapy affecting her immune system.Related coverage:Japanese actress Kumiko Okae dies after novel coronavirus infection"When I see people shopping with their family memb…READ FULL ARTICLE