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Virions of some of the most common human viruses with their relative size. Nucleic acids are not to scale. SARS stands for SARS-CoV-1 or COVID-19, variola viruses for smallpox. Basic structural characteristics, such as genome type, virion shape and replication site, generally share the same features among virus species within the same family.
The human virome is the total collection of viruses in and on the human body. [1] [2] [3] Viruses in the human body may infect both human cells and other microbes such as bacteria (as with bacteriophages). [4] Some viruses cause disease, while others may be asymptomatic.
Viruses accepted to cause human cancers include some genotypes of human papillomavirus, hepatitis B virus, hepatitis C virus, Epstein–Barr virus, Kaposi's sarcoma-associated herpesvirus and human T-lymphotropic virus. The most recently discovered human cancer virus is a polyomavirus (Merkel cell polyomavirus) that causes most cases of a rare ...
This category includes any viruses that can infect humans. Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large.
Human parainfluenza virus type 1 HPIV-1 12730: Most common cause of croup: Human parainfluenza virus type 2 HPIV-2 11212: Causes croup and other upper and lower respiratory tract illnesses Human parainfluenza virus type 3 HPIV-3 11216: Associated with bronchiolitis and pneumonia: Human parainfluenza virus type 4 HPIV-4 11203: Includes subtypes ...
The virus affects both meat production and egg production and causes substantial economic loss. [132] In chickens, infectious bronchitis virus targets not only the respiratory tract but also the urogenital tract. The virus can spread to different organs throughout the chicken. [131] The virus is transmitted by aerosol and food contaminated by ...
Some viruses cause disease in humans, and others are responsible for economically important diseases of livestock and crops. Virus particles (known as virions) consist of genetic material , which can be either DNA or RNA , wrapped in a protein coat called the capsid ; some viruses also have an outer lipid envelope .
Gamma phage, an example of virus particles (visualised by electron microscopy) Virology is the scientific study of biological viruses.It is a subfield of microbiology that focuses on their detection, structure, classification and evolution, their methods of infection and exploitation of host cells for reproduction, their interaction with host organism physiology and immunity, the diseases they ...