Importance and Value of Trees. Since the beginning, trees have furnished us with two of lifeâs essentials, food and oxygen. As we evolved, they provided additional necessities such as shelter, medicine, and tools. Today, their value continues to increase and more benefits of trees are being discovered as their role expands to satisfy the needs created by our modern lifestyles.
However, the most serious is called psittacosis. With this disease, an agent called Chlamydia psittaci causes it, and the disease is also called ornithosis. Birds can be asymptomatic carriers, and may only fall ill when upset, as stress is a major component in all avian diseases.
What Organs And Systems Are Affected By Rabies. Rabies is a viral infection caused by the lyssavirus. Also known as hydrophobia, rabies is transmitted from the bite of an infected mammal. It is can infect dogs, bats, skunks, raccoons and foxes. Even humans can get rabies. If not treated in humans, it is generally fatal. Rabies is known to cause severe inflammation of the brain.