Rapid SARS-CoV-2 antigen test improved with silver amplification As the need for rapid diagnosis of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) increases, due to the relentless surge in coronavirus disease 2019 (COVID-19) cases worldwide, new rapid antigen tests that offer higher sensitivity are being developed. A new preprint posted to the medRxiv* server describes the use of silver amplification technology to develop a sensitive, rapid antigen test for COVID-19. The only methods to contain the current pandemic are non-pharmaceutical, given that there are no specific and effective antivirals and that the first vaccines are only now being administered. These methods depend on early diagnosis of infection, preferably before they become infectious so that they can be isolated along with their close contacts.