<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>
The chain of infection, if we think of it as an actualchain<span>, is made up of six different </span>links: pathogen (infectious agent), reservoir, portal of exit, means oftransmission, portal of entry, and the new host. Eachlink<span> has a unique role in the </span>chain<span>, and each can be interrupted, or broken, through various means.</span>
students do better in school when they are emotionally and physically healthy. They miss fewer classes, are less likely to engage in risky or antisocial behavior, concentrate more, and achieve higher test scores.
