So-called Invisible Biting Parasites .. little known facts about "Delusional Parasites" that affect millions, every year

Parasites affecting mammals are hard to eradicate. These invisible parasites do a lot of damage to the host organisms, which include humans.

Invisible parasites, invisible bugs, parasites change the outward appearance of the host organism

https://archive.org/details/XiaoYingVideo1519686361052HD

What are those invisible biting insects? What is biting me and making me itch?

https://archive.org/details/XiaoYingVideo1519709372639HD

Why invisible biting parasites are so hard to kill, investigating invisible bugs that bite

https://archive.org/details/XiaoYingVideo1519778336641HD