<span>The chain of infection, if we think of it as an actual chain, is made up of six different links: pathogen (infectious agent), reservoir, portal of exit, means of transmission, portal of entry, and the new host. Each link has a unique role in the chain, and each can be interrupted, or broken, through various means
a-infectious agent
b-portal of entry
c-portal of exit
d-reservoirs</span>
Bipolar. Mental illness where you either have a lot of energy or none at all.
Although you are only presenting one aspect of a mental illness that could be related to more than bipolar.
Answer:
Rh Factor. The Rh factor is simply a protein that is found on the covering of the red blood cells. If your red blood cells have this protein, you are Rh positive. If your blood cells don't have this protein, you are Rh negative.
Explanation: Hope this helps if so push that thanks button!
It can last for months or years and can lead to chronic arthritis
if i helped plz make me brainlist
