. 2023 Feb 25;9(3):e14086. doi: 10.1016/j.heliyon.2023.e14086

Table 1.

Viruses present in several ecological niches of the human body.

Human body site	VLP Approximate amount	Eukaryotic viruses	Phages
Gastrointestinal tract	∼10⁹	Siphoviridae Podoviridae Myoviridae Microviridae Inoviridae Caliciviridae, Picornaviridae Reoviridae Virgaviridae	Microviridae Siphoviridae Podoviridae Myoviridae Inoviridae
Oral cavity	∼10⁸	Herpesviridae, Papillomaviridae, Anelloviridae Redondoviridae	Siphoviridae Podoviridae Myoviridae
Respiratory tract	n/a	Anelloviridae Redondoviridae Adenoviridae, Herpesviridae Papillomaviridae	Siphoviridae Podoviridae Myoviridae Microviridae Inoviridae
Blood	n/a	Anelloviridae Herpesviridae, Marseilleviridae, Mimiviridae, Phycodnaviridae Picornaviridae	Myoviridae, Siphoviridae, Podoviridae, Microviridae Inoviridae
Nervous system	∼10⁴	Herpesviridae	Myoviridae, Siphoviridae Podoviridae
Skin	n/a	Polyomaviridae, Papillomaviridae Circoviridae Adenoviridae, Anelloviridae, Herpesviridae,	Siphoviridae Podoviridae Myoviridae
Genitourinary system	∼10⁷	Anelloviridae Papillomaviridae Polyomaviridae Herpesviridae	Siphoviridae Podoviridae Myoviridae

n/a: Not available; Modified from Liang and Bushman, 2021.