Disease Defense
Virus
Viruses are the tiniest of all. A virus is nothing more than a set of genes encased in a protective shell. To replicate, it must infiltrate one of your body’s cells, which it then hijacks and converts into a virus-producing factory. Colds, flu, warts, and measles are all possible outcomes of such invasions. Its part of our disease defense system.
Bacteria
Bacteria are single-celled species that are much larger than viruses. Various are harmless or sometime beneficial to your body, but few, such as food poisoning, typhoid, and plague, can cause disease. Invading bacteria cause disease by releasing toxins, which are poisonous substances.
Worms
Worms such as tapeworms and roundworms may live within the human body. Tapeworms are parasitic worms that live in your intestines and steal nutrients from your food. They can grow to be as long as a bus at 10m (33ft) in length.
Malaria
The blood-sucking bite of some mosquitos can cause malaria, a deadly disease. A single-celled organism called plasmodium is caused of malaria, which lives inside mosquitoes. Worldwide 400,000 people are killed by this disease.
Fun fact!
The tiniest viruses are so small that a full stop will contain 100 million of them. Above are few details of Disease Defence
Must Read – Human Body Barriers Part 1