Fever can support the immune system's attempt to gain advantage over infectious agents, such as viruses and bacteria, and it makes the body less favorable as a host for replicating viruses and bacteria, which are temperature sensitive. Infectious agents are not the only causes of fever, however.
Your sister's grandson is your great nephew. You are his great aunt (if you are a woman) or his great uncle (if you are a man).
The aunt of a great grand niece is her aunt-the sister of her mother or father. The great grand niece has a great grand aunt, or great grand uncle, who is the sibling of one â¦ of her great grandparents.