Hjärninflammation vaccin
30 (wild) + (vaccine-derived) in [4] Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus. [1] Approximately 75% of cases are asymptomatic; [5] mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe symptoms develop such as headache, neck stiffness, and.