By: Haley Sellers
Virus - is an infectious agent that can only replicate when it is inside a living cell.
Viruses are unicellular and can be considered living or non living. Viruses have a capsid that contains all the genetic material.
Movement of viruses
Local movement - is when a virus infects neighboring cells.
Systemic movement - is when a virus moves from an infected part of the host to a distant part of the host. Usually by hitching a ride through the veins.
Major Outbreaks in History
Black Death - Began in the mid 14th century. It is believed that 75 million people died. This disease is currently know and the bubonic plague
HIV/AIDS - As of 2011, 60 million people have been infected and 25 million people have died.
The plague of Justinian - began in the year 541 an estimated 25 million people died. This is believed to be the first recorded outbreak of the bubonic plague.
The Antoine plague - Began in 165 and lasted until 180. An estimated 5 million people died about 2,000 roman died a day. This disease is know known as small pox.