VIROLOGY

WHAT IS VIROLOGY?

WHAT IS A VIRUS?

• A virus is a infective cell.
• They are usually made up of a nucleatic acid with a protein coat.
• The flu is a virus.
• A virus cannot live without a living host

WHAT IS THE IMMUNE SYSTEM?

• The immune system protects your body from infection.
• Weak immune system=greater chance of infection
• Is the key to human protection from viruses

WHICH VIRUSES ATTACK THE IMMUNE SYSTEM DIRECTLY?

• Ataxia Telangiectasia
• Ebola (starts with the immune system)

WHAT IS THE DIFFERENCE

DIFFERENCES

• Viruses cannot survive without a host.
• Bacteria can survive just about anywhere.
• Viruses are tiny.
• Bacteria are bigger.

ARE VIRUSES ALIVE?

WHAT MATTERS MORE,

HOW MANY TYPES OF THE FLU ARE THERE?

• 3 types
• A B and C
• C not as bad as A and B
• The flu is called influenza

HOW DOES A VIRUS TRANSFER?

WHAT ARE SOME LETHAL VIRUSES

HIV

• "In the modern world the deadliest disease may be HIV".
• "It is still the one that is the biggest killer".
• Quote from Dr. Amesh Adalja
• Head spokesperson for the IDSA
• HIV attacks T cells and can eventually lead to AIDS

WHAT ARE SOME GOOD CELLS IN OUR IMMUNE SYSTEM?

• Phagocytes
• LImphucytes R
• Helper T cells

FUN FACTS

• The name virus came from a latin word meaning slimy or poison.
• Walter Reed discovered the first human virus, the yellow fever.
• All the viruses in the world would stretch 200 million light years into space.
• Viruses kill half of marine microbes every day.
• The electron microscope was introduced in 1940.

THANKS FOR WATCHING!!