Coronaviruses are a large group of viruses that can cause respiratory illness in humans and animals. The novel coronavirus is called SARS-CoV-2, and the illness it causes is called coronavirus disease 2019 and abbreviated as COVID-19. People being treated for breast cancer may have a higher risk of severe illness if they get COVID-19. Some breast cancer treatments — including chemotherapy, targeted therapies, and immunotherapy — can weaken the immune system and possibly cause lung problems. People who have weakened immune systems or lung problems have a much higher risk of complications if they become infected with this Corona virus. People with breast cancer that has metastasized (spread) to the lungs also can have lung problems that may get worse if they develop COVID-19. The best way to avoid becoming sick from this coronavirus is to avoid being exposed to it. There are no treatments or vaccines yet, but scientists are working on them. The COVID-19 pandemic has affected just about every aspect of life; including screening, diagnosis, treatment, and follow-up care for breast cancer. It is important take precautions to lower your risk of getting sick, especially if you have a serious health problem such as breast cancer. “Social distancing” or “physical distancing” practices are being recommended.