How to differentiate between type A and type B influenza

Influenza A and influenza B are not derived from poliovirus variants. The original statement contains a significant scientific error. Here is the corrected translation based on accurate virology: Influenza A and influenza B viruses are two distinct types of influenza viruses, both belonging to the family Orthomyxoviridae. To differentiate between them, antigen detection targeting surface proteins of the virus can be performed first, identifying which antigens bind specifically to each virus. Second, the viruses can be isolated and separated from other pathogens, followed by comparison of their genetic and antigenic characteristics. Finally, based on these analyses, they can be classified into different types of influenza viruses. Through these methods, influenza A and influenza B viruses can be clearly distinguished.