Ad26.COV2.S

Ad26.COV2.S is a COVID-19 vaccine developed by Johnson & Johnson. It uses a harmless virus (adenovirus) modified to carry genetic instructions for the COVID-19 spike protein. When injected, it prompts your immune system to recognize the spike protein and build defenses against the virus. Unlike some vaccines requiring two doses, this is a single-dose vaccine, making it convenient. It has been shown to be effective in preventing severe COVID-19 illness and has played a significant role in global vaccination efforts.