True or False: The most common portal of entry for human pathogens is the skin.

The statement that the skin is the most common portal of entry for human pathogens is false. While the skin can serve as a barrier and may be breached by certain pathogens, the mucous membranes of the respiratory and gastrointestinal tracts are typically considered the primary portals of entry for many pathogens.

For instance, respiratory pathogens gain entry through inhalation of droplets, while gastrointestinal pathogens commonly enter through ingestion of contaminated food or water. Additionally, pathogens can also exploit other routes such as urogenital tracts or parenteral entry due to breaks in the skin, but these are less commonly recognized as primary entry points compared to mucosal surfaces. Thus, the concept that the skin serves as the most common point of entry does not align with how human infections typically occur.