Which of the following is NOT considered a vector for infection transmission?

In the context of infection transmission, a vector typically refers to an organism that transmits pathogens from one host to another, often through bites or contact. Mosquitoes and birds serve as biological vectors in this capacity, as they can carry and spread diseases through direct interactions with infected hosts or environments.

Humans can also serve as vectors; they can transmit infections from one person to another, often through direct contact, respiratory droplets, or other routes of transmission.

In contrast, inanimate objects, such as surfaces or medical equipment, do not actively participate in the transmission of infections in the same manner as living organisms. They can, however, harbor pathogens and facilitate the spread of infection when contaminated, but they do not actively carry or transmit pathogens like mosquitoes, birds, or humans do. This distinction makes inanimate objects fundamentally different in their role concerning infection transmission.