Covid 19

3.​Viruses have several types, in general it has  characteristics, classification and diseases that can be caused specifically. Analyze virus characteristics based on:

a.​Characteristics of viruses

1. Very small size (microscopic) between 20 nanometers to 400 nanometers.

  2. Can reproduce or reproduce yourself.

  3Can improve mutation.

  4. Does not have cells and organs that are normally present in cells (such as cell membranes, cytoplasm, and nucleus).

  5. Have either DNA or RNA.

  6. Can only develop by infecting certain living cultivation cells.

b.​Virus form   1. Round body shape by viruses that cause AIDS, ebola and influenza.

  2. Body shape caused by viruses that cause rabies.

  3. Body shape possessed by the TMV virus (Tobaccao Mosaic Virus).

  4. Body shape caused by the Adenovirus virus which causes fever.

  5. The body shape of the letter T in bacteriophages, the virus attacks the bacteria E. coli.

c.​Virus structure

1. Head

The virus has a head containing DNA or RNA which is the genetic material of life. 

2. Body Fill

The contents of the body of the virus or commonly called virion, is a genetic material in the form of one type of nucleic acid (DNA or RNA). 

3. Tail

The tail is part of the body structure of the virus that functions as a tool to attach itself to the host cell. 

4. Capsid

The capsid is a layer of a series of capsomers in the body of the virus that functions as a wrapper of DNA or RNA.

d.​How the  virus cycle  life is 

The process of virus reproduction consists of five stages, namely adsorption, penetration, synthesis (eclifase), maturation and lysis.

e.​Propagation of the virus

Viruses are organisms that need to infect a host cell in order to reproduce. The new viruses leave the infected cell and look for other susceptible cells to infect. The mathematical models for virus propagation are very similar to population and epidemic models, and involve a relatively large number of parameters. These parameters are very difficult to establish with accuracy, while variability in the cell and virus populations and measurement errors are also to be expected. To deal with this issue, we consider the parameters to be random variables with given distributions.

f.​Virus Classification

1. Based on the organism being attacked

•First, bacteriophage is a virus that attacks bacterial cells. 

•Second, animal viruses are viruses that attack animal cells. 

•Third, plant viruses are viruses that attack plant cells.

g.​Diseases caused by viruses

1. Colds

  2. Flu

  3. Smallpox Air

  4. Chikungunya

  5. Dengue hemorrhagic fever

  6. Viral hepatitis

  7. Rabies

  8. Rubella

  9. Zika Virus

  10. HIV / AIDS

  11. Ebola disease

  12. Enchepalis

4 a.Background epidemic corona virus

In December 2019, a group of cases of "pneumonia (pneumonia) with no known cause" were associated with the Huanan seafood wholesale market. This market has thousands of stalls selling various animals, such as fish, chickens, pheasants, bats, guinea pigs, poisonous snakes, deer spots, and other wild animals. After the corona virus is known as the cause of this disease, suspicion also arises that the new corona virus is sourced from animals. Most corona viruses circulate among animals, but six species have evolved and are capable of infecting humans, as seen in severe acute respiratory syndrome (SARS), Middle Eastern respiratory syndrome (MERS), and four other corona viruses that cause mild respiratory symptoms like a cold. The six can be transmitted from human to human. 

b.​symptoms of being infected with the corona virus

fever, runny nose, cough, sore throat, and headache; or symptoms of severe respiratory infections, such as high fever, cough with phlegm and even bleeding, shortness of breath, and chest pain.

c.​how  Corona Virus spread

COVID-19 - spreads from person to person in close proximity, similar to other respiratory illnesses, such as the flu. Droplets of bodily fluids - such as saliva or mucus - from an infected person are dispersed in the air or on surfaces by coughing or sneezing. These droplets can come into direct contact with other people or can infect those who pick them up by touching infected surfaces and then their face. According to scientists, coughs and sneezes can travel several feet and stay suspended in the air for up to 10 minutes.

d.​prevention of corona virus outbreaks

Wash your hands properly, Use a mask, Maintain endurance, Do not go to an infected country, Avoid contact with animals that have the potential to transmit coronavirus.

e.​How to handle it

Dont get panic.