Daria (56 years old)

56-year-old Daria is actively receiving chemotherapy for uterine cancer detected 9 months ago. She is currently receiving her last cycle of chemotherapy. Yesterday she received a letter from her town administration inviting her to get a booster shot for COVID-19. She is currently fully vaccinated (2 doses of mRNA-based Pfizer vaccine) but she is puzzled by receiving an invitation for the booster. She calls you to ask if she should receive the booster shot.