The Invisible Threat: Exploring the Science Behind Deadly Viruses Part 1

1. Black death [ Bubonic Plague ]:

                         Black death is a plague that has been severe and  powerful second plague in History. Black death raged from 1346 to 1353. This is also a fatal pandemic recorded in human history. This plague has caused over 75 to 200 million people. This affected more than 60% of the European Population. 

                         Bubonic plague is caused by a bacteria "Yersinia Pestis". This plague was the second Plague Pandemic in History. This plague was passed to other people by Fleas. There is another way this is being spread is by Hand to Hand contact. Black death was the second great natural disaster in Europe during the middle ages. 

2. Small Pox :

              Small pox is a infectious disease caused by two variants of viruses "Variola major and Variola Minor". This disease finally naturally caused in October 1977. The world health organization eradicated this disease finally in 1980. This is a disease that is only eradicated by making it a human disease. In 1789 Vaccine was developed.

                  Small pox origin is still unknown to human kind. This has been dating back to 3rd Centaury. In 18th Centaury Europe this disease has death rate of over 400000 people in a year. It is being estimated that over 300 million deaths in the 20th Centaury. The basic symptoms are formation of Ulcers. Over 10 million people have been suffered from Blindness due to small pox.

3. Severe acute respiratory syndrome [SARS] :

 

                   SARS is a virus that has created a pandemic in the year 2003. This is a virus that is a family of Covid - 19 or Corona Virus. The specialty of this virus is it keeps evolving into a new form which makes it difficult to create an antidote. The first known cases are recorded in November 2002. 

                   Though this virus is not Covid-19. No cases have been found after 2004. In December 2019 another SARS-Cov2 created a new situation. That is known as Covid-19 Pandemic. The earlier symptoms are headaches, high fevers. This has a ability to rapidly mutate. SARS is a viral disease that antibodies have no effect on it. This is used by preventing the secondary bacterial infection.

4. Avian Influenza :

                                

                Avian Influenza is known as bird flu. This flu is a virus that easily adapted to birds.  There are many flu outbreaks in the History. This was first recorded in Italy 1878. Only in 1955 that this virus was found causing a bird type influenza virus. 

                Avian Influenza has been easily affecting the aquatic life. In 2016 and 2017 millions of Goose and Birds were killed to prevent the further spreading of the virus. There were suspected of flu in the Home farming. This can be prevented by proper covering. And people who don't have contact with birds don't have to worry.

5. Ebola :

 

                Ebola is fatal disease that causes death rates average 50%. The Filo Ebola fatal rates range from 25% to 95%. There are five types of Ebola virus. Out of five viruses four viruses causes disease in human beings. The symptoms of this disease infection between two days and three weeks. 

                     Ebola was first discovered in 1976 and bats are being their permanent host. The virus spreads directly through the direct contact with the blood. Control of outbreaks like this have to be done faster, efficient, detect the origin, rapid detection and provided with well equipped medical facilities. This Ebola virus doesn't have any vaccination until now. The only way is to contaminate the spread of virus.