What are the different portals of entry between parasites and the host?

Parasites can enter their hosts through various portals, including the skin, mucous membranes, and gastrointestinal tract. For example, some parasites, like hookworms, penetrate the skin directly, while others, such as Giardia, are ingested through contaminated food or water. Respiratory routes are also common for certain parasites, like the larvae of Strongyloides, which can enter through inhalation. Additionally, vectors such as mosquitoes can introduce parasites like malaria directly into the bloodstream.