Dreams are composed of latent and manifest content. An example of a latent bacterial infection is latent tuberculosis. Isoniazid is often used to treat latent and active tuberculosis infections. Factor analysis searches for such joint variations in response to unobserved latent variables. Various treatment regimens are in use for latent tuberculosis. The stages of syphilis are categorized as primary, secondary, latent, and tertiary. It is not generally recommended for the treatment of latent tuberculosis. It develops after secondary syphilis and is divided into early latent and late latent stages. Variational autoencoder models make strong assumptions concerning the distribution of "latent variables". For this reason, the study emphasized observation of individuals with late latent syphilis. Disulfiram has been studied as a possible treatment for cancer and latent HIV infection. These stages are primary, secondary, latent, and late syphilis. These involve the combination of latent and pathways effects. "Herpesviridae" can cause latent or lytic infections. People with latent TB do not spread the disease.