An RNA virus is a type of virus that has RNA as genetic material. As the RNA virus enters the host, the virus makes use of the presence of endogenous cellular RNA-dependent RNA polymerases. This allows the virus to replicate its genome and integrate itself into the host's DNA. Once integrated, the virus may become latent (such as in HIV infection) or maybe be transcribed to continually produce new viral proteins (such as in SARS-CoV-2 infection). Examples of RNA viruses include the hepatitis C virus, the virus that causes Ebola, SARS-CoV-2 (the virus that causes the COVID-19 disease), polio, measles, and the HIV virus.