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Hepatitis A and hepatitis B are viral liver infections. They have similar symptoms but different modes of transmission and potential complications. A person can prevent both viruses through ...

Influenza A is more common and can infect various species, including humans, birds, and pigs, while influenza B primarily affects humans. Both influenza A and B are highly contagious and produce ...

There are four types of influenza virus. Influenza A is the most common, followed by influenza B. Both are highly contagious and have similar symptoms, including fever, chills, and body aches.