They go on to further define, and discuss, airborne transmission. I have to, again, point out that this is an important step for the WHO to acknowledge and discuss.
"Airborne or Inhalation transmission*: The process whereby aerosolized infectious respiratory particles (IRPs) are inhaled and enter the respiratory tract of a susceptible person, move through the upper and then lower parts of the respiratory tract, and can be deposited on the tissue at any point along the tract, potentially even reaching the distal alveolar region. This mode of transmission can occur when IRPs have travelled either a short or a long distance (range) after emission from an infected person or after resuspension of deposited particles from surface.
The Technical Advisory Group agreed to describe the inhalation transmission mechanism as a sequential five steps or components process with the short- and long- range transmission terms unfolding simultaneously (Figure 2)."
I'll put a brief description of each of the 5 components in the next post.