Answer:
Because last year's flu shot might not be effective as the new one
<span>1.Treat all blood and body fluid spills as if they were infectious.
2.When providing first aid or CPR, protect yourself first, then treat the victim second.
<span>3.Wear appropriate personal protective equipment: gloves, goggles, etc. as required by the accident.</span></span>
To sit with yourself and think carefully about the problem and determine what is worse and what is better then choose the best and on the basis of dimensions determine your decision
<span>Social relationships both quantity and quality affect mental health, health behavior, physical health, and mortality risk. </span>