Immune System

​The body's special defense response against foreign organisms

How can we, as a society, prevent the spread of disease?

​Smallpox

Mpox is a disease caused by a virus in the same family as smallpox. There's an outbreak in Africa and some cases in the US. No additional spread has been reported.

Smallpox was declared eradicated by the WHO in 1980 after the last naturally occuring case was in 1977. Why?

Smallpox vs monkey pox

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Macrophages

Immunity

The capacity to resist certain types of organisms and toxins that will damage tissues and organs

Natural immunity - one's own ability to fight off defenses
Acquired immunity - the body develops specific immunity against invading agents such as lethal bacteria, visus, toxins, and even foreign tissues from other organisms.