This virus can be transmitted from human to human.

He is living as one person.

This park is overflowing with people.

This park is always bustling with people.

Hominidae is a family that includes part of the primates, including humans, chimpanzees, and gorillas.

I often go to one-man karaoke sessions on weekends.

The human immunodeficiency virus destroys the immune system, causing the body to lose its ability to fight disease.

The one-humped camel lives in the desert.

It is important to learn about the prevention and treatment of the human immunodeficiency virus.

The human immunodeficiency virus destroys the immune system, making the body unable to fight disease.