what is vector
A disease vector is any living organism that transmits an infectious disease to humans (or in agriculture to animals and plants). A vector picks up the disease from an infected host or the environment then transfers it to a new host through a bite when feeding or by mechanical transmission such as defecating on the skin or from particles on the outside of the body.
So, as per definition humans are not considered as vectors. They are basically organisms which transfers disease via bite or such similar ways.