"Patient A contracted a virus after coming in contact with a used needle. The virus is a part of the Retroviridae family, and patient A even had this virus for a long time before being diagnosed." What is the virus?

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .