A virus is an infectious agent that is sub microscopic and it replicates in the living cells of any organism. Viruses are those infectious agents that occur in every organism like animals, plants and humans. Viruses are present in all the ecosystems and there are millions types of viruses present in the earth. The study of viruses is known as virology and the specialization in it is called microbiology. When the organism is infected the host cell starts producing many identical copies of the virus and spreads rapidly. When the viruses are not in the process of infecting or if they are not present in the infected cell then they start to live as an independent particle called virion.
Virion consists of a genetic material i.e. the molecules of RNA and DNA. It also has a protein coded material called capsid. Capsid protects and surrounds the genetic material. In rare cases there is also a layer on the lipids which basically is basically an envelope. The shapes of these viruses range from basic helical and icosahedral shapes to much more complex structures. Most viruses have virions too little to be seen with an optical magnifying instrument as they are one hundredth the size of most microscopic organisms.
The beginnings of viruses within the developmental history of life are vague: a few of them may have evolved from plasmids. Plasmids are pieces of DNA that can easily move between the cells while some others might have evolved from the microbes. In evolution, viruses are a vital means of the horizontal gene transfer, which increases hereditary differences in a way closely to sexual reproduction. Viruses by a few scientists are known to be a life frame, since they carry genetic material, replicate, and evolved through the normal selection, in spite of the fact that they do not have key characteristics (for example cell structure) that for the most part are considered fundamental criteria for “life”, Since they have a few but not all qualities, viruses are depicted as quot organisms that are at the edge of life quot and also as replicators. Virus spreads in numerous ways. One transmission way is through the organisms that are disease bearing which are called as vectors: for example, viruses are regularly transferred from plant to plant by the insects that nourish on the sap of plant, for example aphids; and viruses in creatures can be carried by the blood sucking insects. Flu infections are spread by wheezing and coughing. Rotavirus is the common cause of viral gastroenteritis, is transmitted by the faecal–oral course, passed by hand-to-mouth contact or in nourishment or water.
Viral diseases in creatures provoke an immune reaction that ordinarily kills the contaminating virus. Immune reactions can too be created by immunizations, which bestow a falsely obtained insusceptibility to the particular viral disease. A few infections, including the ones that cause HPV disease, AIDS and viral hepatitis, avoid these immune reactions and result in chronic contaminations. A few antiviral drugs have been created.
Etymology of virus:
The word virus is derived from a Latin word which means poison. The plural word is viruses. It literally means the agent that created diseases.
Viruses at homes:
There are different disinfectant sprays that are used to kill different viruses at homes as well. For example impact 1040 disinfectant sprayer that you can easily buy from different companies like all titan parts etc. These are very important to kill viruses at home. These viruses that are present at your homes can cause serious damages to your health. You should always use the disinfectants that are used to protect you.
Disinfectants are basically used against the infections. These are used to kill different microorganisms like viruses, bacteria and insects. The disinfectants most commonly use alcohol, silver dehydrogenate etc. These are the elements in the sprays that are used to kill the infectious particles and they play a key role in making environment free of viruses and bacteria’s.
Disease in humans:
There are different diseases in humans that are caused by viruses for example influenza, Ebola virus, corona virus and AIDS. These viruses might be life threatening and some might be easily treatable. There are different types of viruses which make them harmful. The viruses that are the most dangerous and are life threatening include AIDS, Corona virus and Ebola virus. The other ones like influenza etc are not life threatening. They are easily curable with some antiviral.
It is a viral infection that directly affects your respiratory system like your throat, nose and lungs. Influenza is called flu commonly. It makes it difficult for the person to breathe because it is affecting your respiratory system. Influenza virus is a disease that in most people resolves itself and in a few people it needs proper treatment.
Virus Signs and Symptoms:
The signs and symptoms of influenza virus are:
- aching muscles
- Sweats and chills
- Dry cough
- Weakness and fatigue
Ebola virus comes from Zaire Ebola virus; it is the sixth known species in the genus Ebola virus. Ebola virus is also one of the most dangerous viruses in the world. It causes severe hemorrhagic fever and that proves to be fatal.
Virus Signs and Symptoms:
The signs and symptoms of Ebola virus are:
- Pains and aches for example a headache, abdominal pain and joint pain
- Fatigue and weakness
- Vomiting and Diarrhea
AIDS stands for acquired immunodeficiency syndrome. It is a disease that affects your immune system which occurs due to a virus called HIV. HIV destroys the T lymphocytes of our immune system which makes people vulnerable to common diseases that is life threatening.
Virus Signs and Symptoms:
- Rapid loss in weight
- Night sweats and fever
- Unexplained tiredness and fatigue
- Swelling of the lymph glands
- Sores in the genitals and mouth