Supporters of contact tracing, which include the director of the U.S. Centers for Disease Control, say the process is fundamental for controlling the spread of communicable diseases, like coronavirus.
The shift from infectious, or " communicable" diseases to NCDs as a major cause of death is a vital clue for understanding why a country's mortality rate could be decreasing.
For instance, an infectious, or communicable, disease is the one that can be passed between persons such as by means of airborne droplets from a cough or sneeze.
Isabelle: I know, but you've just returned from McQuillanland, and I've just read that anyone who has been there may be a carrier of a communicable disease called Niebola.
Now, the reason that we give these vaccines to children is most of these diseases are what are called " communicable, " which is to say that you can get them from other people.