What’s the point of vaccines?
A vaccine teaches your immune system how to recognize and fight a specific germ (like a virus or bacteria) before you get sick. Your immune system is like an army. When it encounters a real…
Clear and simple answers to life's questions.
A vaccine teaches your immune system how to recognize and fight a specific germ (like a virus or bacteria) before you get sick. Your immune system is like an army. When it encounters a real…