What are the symptoms likely to be? Will the symptoms be different because I have cancer/ a weaker immune system? The NHS outlines the common symptoms of coronavirus on its website. Coronavirus can have serious effects on anyone who has a long-term health condition or a weakened immune system, including some people with cancer. Follow the advice on avoiding catching or spreading germs. Get advice straight away if you are in contact with someone with confirmed coronavirus, or if you need medical help.