Infectious diseases can strike at any time. Some of them cause relatively minor interruptions to daily life and often can resolve of their own accord when the body’s immune system mounts a successful defense. Other diseases can cause serious, even life-threatening symptoms or spread rapidly, which makes it essential for medical professionals to help slow down or stop the transmission.

What is herd immunity?

Herd immunity is a term that often arises in relation to infectious diseases. Herd immunity has

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