Both produce similar reactions, but smallpox is deadly, while cowpox isn’t

she noticed locals in Turkey putting pus from patients with mild cases of smallpox into children's wounds

these children quickly recovered from a normally deadly disease

He saw that milkmaids who had been infected with cowpox and recovered didn’t get sick from smallpox

He gave a child cowpox

The child was then infected with smallpox, but the child didn’t get sick the child was immune to smallpox

Today these experiments would be seen as unethical

No one deserves to be part of an experiment that could be deadly

A weakened or dead virus is injected

It will normally not make you sick but the antigens are still there

The antigen will cause an immune response and it will cause antibodies to be created against the antigen

Next time, you can fight it off quickly!

Active Immunity is…

Passive Immunity is…

While breastfeeding, mothers give antibodies for a variety of diseases to their babies.

What would happen if… The baby is exposed to a pathogen that the mom provided an antibody for while breast feeding (or within a few months of stopping)?

The baby is exposed to the same pathogen years later?

Allergies are the result of your immune system making a mistake

It thinks that a substance is a deadly pathogen

It releases histamine to start the immune response This leads to swelling, itchy eyes, runny nose, hives…

In mild cases: An antihistamine stops the release of histamine

In severe cases: Epi-pens give epinephrine (adrenaline) which opens your airway and allows blood to flow easily

AIDS AIDS is caused by HIV (human immunodeficiency virus)

HIV infects helper T cells death from HIV / AIDS can result from less serious infections, such as pneumonia

How do you catch AIDS? HIV is only transmitted through sharing of bodily fluids ▪ such as blood or semen

Could you get a vaccine for AIDS?