The dictionary states the definition as âin a literal way or senseâ but adds that, informally, it can be âused for emphasis rather than being actually trueâ such as âwe were literally killing ourselves laughingâ. The definition was added in the September 2011 edition, but went unnoticed until this week.
Strictly speaking, it is not AIDS but HIV that spreads through blood, semen and from a mother to child. Mosquitoes cannot transmit HIV for two reasons. Firstly, when the mosquito bites with its probosis, it draws blood and injects saliva, which contains antiviral factors and immunoglobulins and hence cannot transmit HIV. The blood from one person is not injected into the mosquito's next victim.
Diseases such as yellow fever and malaria are transmitted through the saliva of specific species of mosquitoes. However, HIV lives for only a short time inside an insect and, unlike organisms that are transmitted via insect bites, HIV does not reproduce (and does not survive) in insects.