<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>
I don’t think that’s a question you have to fill in correctly
Angioplasty is the procedure wherein the obstructed arteries are mechanically widened and this is the common treatment for atherosclerosis. An aneurysm is an excessive localized enlargement of the artery caused by the weakening of the arterial walls. Angioplasty is an incorrect treatment for aneurysm because this would worsen the condition and can lead to death if the aneurysm bursts due to the pressure applied by the widening of the arteries.
