Not known:  rash, itching, together with some of the following signs or symptoms: fever, joint pain, muscle pain, swollen lymph nodes and/ or flu-like symptoms (signs of serum sickness)  purplished-red spots, fever, itching (signs of inflammation of blood vessels also called vasculitis)  unusual bleeding or bruising (signs of thrombocytopenia)  muscle pain (myalgia)  fever, sore throat or mouth ulcers due to infections (symptoms of low level of white blood cells also called neutropenia)