Older adults usually don't get mono, because they have immunity to the virus. Mono can be spread through contact with saliva, mucus from the nose and throat, and sometimes tears. Because the virus can be spread through kissing, it has earned the nickname the kissing disease..
Death row is a prison facility or area of a prison where people under sentence of death are held to await their executions. In nations which practice the death penalty, not all have a facility of this kind; some hold their prisoners among the general population or in a generic area of a prison.
Death's-head, a symbol of mortality, is from 1590s. Death row first recorded 1940s. Death knell is attested from 1814; death penalty from 1875; death rate from 1859. Slang be death on be very good at is from 1839. Death wish first recorded 1896.