THE MOST DANGEROUS VIRUSES IN THE WORLD

THE MOST DANGEROUS VIRUS- Virus is the small unit of infection which can spread in the living cell rapidly,which may causes to death.

                          DIFFERENT TYPES OF VIRUS

Ebola: caused by Ebola virus:

• Ebola is a rare but deadly virus that causes fever, body aches, diarrhoea and sometimes bleeding inside the body.
• The first outbreak happened in Nzara in Sudan and the other in Yambuku in Republic of Congo. According to the WHO, the fruit bats of the Pteropodidae family are natural Ebola virus hosts. 
• It is also known as deadly virus.
• Ebola then spreads through human-to-human transmission via direct contact (through broken skin or mucous membranes) with the blood secretion,organs or other bodily fluids of infected people.

 Marburg virus [Hemorrhagic fever]:

• Transmission of these viruses occurs by direct contact with infected body fluids from animals and humans, such as blood,urine, saliva, , respiratory droplets and stool, and contact with virus-contaminated objects (e.g., needles).
• Persons who prepare, cook, and eat contaminated animals may become infected so it is very dangerous  virus.

Swine Flu: 

• It is caused  by H1N1 Virus,The virus has its origins in an influenza pandemic.
• By this virus itself was a human influenza virus, researchers found that the virus, causing the pandemic was able to infect and replicate in pigs but did not kill them , this is also it not more dangerous than Ebola virus.

SARS: 

• It is caused by the SARS coronavirus
• By its effects of this outbreak included uncertainties and fear that,it is in some cases, resulted in debates and policies against students returning to their U.S. universities from Asia after the spring break .

Avian Flu: 

• It is caused by the H5N1 virus
• By the survey of WHO, as of July 2014, 667 cases of humans infected with H5N1 have been reported which caused deaths of 393 people and many other people affected by this flu .

A PERSON WHO IS INFECTED BY THE VIRUS