Answer:
I'm a bacteria that causes typhoid What's my name ?
What is that over the head and under the hat?
The moon is my father. The sea is my mother. I have a million brothers. I die when I reach land.
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?