Expected RATE of Vaccine‑Associated Paralytic Poliomyelitis: A Simulation Analysis Regarding Transition from the Trivalent to Bivalent Oral Poliovirus Vaccine

Sora Yasri, Viroj Wiwanitkit


Dear Editor,Poliomyelitis is a preventable infection by vaccine. At present, natural disease exists in some countries, especially those in Africa. The vaccine‑associated paralytic poliomyelitis(VAPP) is an unwanted adverse event of vaccination. 


vaccine‑associated paralytic poliomyelitis; Transition; mathematical model

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