Poxviruses (poxviridae) are a group of large DNA viruses that can cause various diseases in humans and animals. These include both the viruses that cause smallpox in humans and the viruses that cause smallpox in animals. Poxviruses are among the most complex and dangerous viruses known to science.
Poxviruses are large in size and consist of two components - the viral genome and the capsid (protein shell). The genome of the virus contains DNA that encodes proteins necessary for the virus to reproduce in host cells. The capsid consists of proteins that protect the viral genome from environmental influences and help the virus penetrate cells.
Viruses that cause smallpox in humans include smallpox and cowpox. Smallpox is one of the most dangerous diseases that has ever existed on Earth. It was eradicated in 1980 thanks to global vaccination, but before that it claimed millions of lives. Cowpox can also be dangerous to humans, especially to children who have not yet been vaccinated.
Animal pox can cause serious problems in farm animals such as cattle and pigs. This can lead to decreased productivity and increased costs for treatment and care of animals.
Although poxviruses pose a serious threat to human and animal health, they are also used as biotechnological tools. Some poxviruses can be used to produce vaccines and other drugs. There are also treatments based on the use of poxviruses that help fight cancer and other diseases. Overall, poxviruses remain an important subject of research and study, and we still need more effective methods to control these viruses.
Poxviruses are members of a group of large, DNA-containing viruses; these include the virus that causes cowpox (vaccinia) and the smallpox virus that infects animals and causes smallpox in humans. Each poxvirus contains a circular, closed DNA molecule whose diameter is about 170 nm,