Why would we give moral consideration to infants but not animals? ?

I don't know, maybe because of the way we see animals. Not as our equal parts 

There are many different immunities innate, adaptive, and passive

Explanation:

I don't know which immunity you are talking about so i will explain all of them

We develop adaptive immunity when we're exposed to diseases or when we're immunized against them with vaccines.Innate immunity is when the skin acts as a barrier to block germs from entering the body. And the immune system recognizes when certain invaders are foreign and could be dangerous.Passive immunity: Passive immunity is "borrowed" from another source and it lasts for a short time. For example, antibodies in a mother's breast milk give a baby temporary immunity to diseases the mother has been exposed to.Hope this helpsHope this is rightBrainliest plzHave a wonderful day