Invasion and multiplication of pathogenic microorganisms in the body is called an infection. When we are infected by pathogens we become sick, which means that our bodies stop functioning properly. Infectious agents, such as bacteria, a virus, fungi or protozoa cause communicable diseases.
verb (used with object), cc'ed or cc'd, cc'ing. 1. to send a duplicate of a document, email, or the like to: I always cc my boss when I write a memo to my staff. 2. to send (a duplicate of a document, email, or the like) to someone: Jim, please cc this to each of the department heads. Origin of cc.
cc means a carbon copy; bcc means a blind carbon copy, ie secretly sent. It comes from the days when we slid a carbon paper between two sheets of paper to produce a duplicate as you wrote- so you ended up with an original and a copy, for filing, usually, but sometimes for sending to someone else for information.