What Is Virus? It’s Symptoms And Preventions

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What Is Virus? It’s Symptoms And Preventions

What Is Virus? It’s Symptoms And Preventions

Virus is a main cause to get many diseases, To know everything about virus you can read the whole article

Read More : Click here to know about Infection 

What Is Virus ?


Virus spread through the blood-stream or the nerves, attacking cells throughout the body. For instance, HIV, the human immunodeficiency virus that causes AIDS, attacks certain cells of immune system that are located throughout the body.A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and Archean.

 Causes Of Virus

Virus may spread from mother to child or from person to person.Some viruses can spread by simple contact, exchanges of saliva, coughing, or sneezing. Some require sexual contact, while others go through the fecal-oral route via contaminated food or water. Still other viruses require an insect like a mosquito to carry the virus from person to person.

1.What Diseases are Caused By Viruses:

Several human diseases are caused by viruses; these include:

  • Common cold

  • Measles

  • Ebola

  • Fever

  • HIV

  • Some types of cancer

Symptoms Of Virus

A viral is a disease that can be caused by different kinds of viruses, of which the influenza-virus is best known. A viral infection can be in different places in the body, some viruses are mainly in the intestine, while others prefer the lungs and airways.

These can include:

  • Fever

  • Muscle aches

  • Coughing

  • Diarrhea

  • Headache

Prevention Of Virus

Viral infections are hard to treat because viruses live inside your body's cells. They are "protected" from medicines, which usually move through your bloodstream. Antibiotics do not work for viral infections. There are a few antiviral medicines available.

  • Always keep your hands clean

  • Follow tips for Coughing and sneezing without contaminating

  • Avoid touching your nose, eyes and mouth

  • Avoid contact with people that are sick as they may be contagious

  • Clean your surrounding regularly, as well as the sanitary appliances you use.

Read More : Click here to check about Bacterial infection 

Types Of Virus

1. Cold Virus

he common cold remains a vexing and ubiquitous human affliction. In the United States alone, approximately 1 billion head colds occur each year. Viral infection of the lining of the nasal passages leads to runny nose, watery eyes, scratchy throat and sneezing. The typical course of the common cold is 7 to 14 days. The Centers for Disease Control and Prevention asserts that more than 200 known virus strains can cause a head cold, with rhinoviruses proving the most frequent culprits.

2. Flu Virus

Three types of viruses cause influenza, more commonly known as the flu. Influenza virus types A and B cause seasonal flu infections, which typically occur from late fall through early spring. Influenza type C infections occur far less frequently and typically cause a mild form of the illness. Common symptoms of the flu include body aches, fever, fatigue, headache, scratchy throat, dry cough and a stuffy nose.

3. Stomach Virus

Common symptoms include abdominal pain or cramps, diarrhea, nausea and vomiting. Rotavirus frequently causes gastroenteritis in infants and young children. Symptoms include fever, vomiting and watery diarrhea. Norovirus is another common stomach virus that affects both children and adults. Diarrheal symptoms predominate in children with norovirus, whereas adults often experience persistent vomiting. Other common stomach viruses include strains of adenovirus, sapovirus and astrovirus.


The Human Immunodeficiency Virus (HIV) is the causes of Acquired Immune Deficiency Syndrome (AIDS). HIV can be transmitted sexually, via contaminated needles or blood transfusions, and from mother to child during pregnancy, birth or breast-feeding.

5. Chickenpox

Chickenpox is a highly contagious illness caused by primary infection with varicella zoster virus (VZV). It usually starts with vesicular skin rash mainly on the body and head rather than at the periphery and becomes itchy, raw pockmarks, which mostly heal without scarring. On examination, the observer typically finds lesions at various stages of healing. Chickenpox is an airborne disease spread easily through coughing or sneezing of ill individuals or through direct contact with secretions from the rash. A person with chickenpox is infectious one to two days before the rash appears.

6. Yellow Fever

The yellow fever virus is transmitted by the bite of female mosquitoes (the yellow fever mosquito, Aedes aegypti, and other species) and is found in tropical and subtropical areas in South America and Africa, but not in Asia. The only known hosts of the virus are primates and several species of mosquito. The origin of the disease is most likely to be Africa, from where it was introduced to South America through the slave trade in the 16th century.

7. Other Human Virus

A complete list of human viruses would encompass volumes and likely never be complete as new types continue to be discovered. Some viruses are uncommon but greatly concerning because of their potential lethality, such as Ebola and rabies viruses. Others are common and cause a range of human illnesess, such as those in the herpesvirus family, which are responsible for cold sores, genital herpes, infectious mononucleosis, chickenpox, shingles and a number of other illnesses.

What Is Ebola Virus

Ebola virus disease (EVD), previous known as Ebola hemorrhagic fever (Ebola HF), is a serious, often fatal condition in humans and nonhuman primates such as monkeys, gorillas and chimpanzees. Ebola is one of several viral hemorrhagic fevers (VHF), caused by infection with a virus of the Filoviridae family, genus Ebolavirus.


Causes Of Ebola Virus

Person-to-person transmission occurs after someone infected with Ebolavirus becomes symptomatic. As it can take between 2 and 21 days for symptoms to arise, a person with Ebola may have had contact with hundreds of people, which is why an outbreak can be hard to control and may spread rapidly.

Transmission of Ebola between humans can occur in several ways, including through:

  • Direct contact through broken skin and mucus membranes with the blood, secretions, organs or other bodily fluids of infected people

  • Indirect contact with environments contaminated with such fluids

  • Exposure to objects (such as needles) that have been contaminated with infected secretions

  • Burial ceremonies in which mourners have direct contact with the body of the deceased person can also play a role in the transmission of Ebola

  • Exposure to semen of people with Ebola or who have recovered from the disease (the virus can still be transmitted through semen for up to 7 weeks after recovery from illness)

  • Contact with patients with suspected or confirmed EVD (health care workers have frequently been infected while treating patients).

Symtomps Of Ebola Virus

Ebola can feel like the flu or other illnesses. Symptoms show up 2 to 21 days after infection and usually include:

  • High fever

  • Headache

  • Joint and muscle aches

  • Sore throat

  • Weakness

  • Stomach pain

  • Lack of appetite

Cure Of Ebola Virus

There’s no cure for Ebola, though researchers are working on it. Treatment includes an experimental serum that destroys infected cells.
Doctors manage the symptoms of Ebola with:

  • Fluids and electrolytes

  • Oxygen

  • Blood pressure medication

  • Blood transfusions

  • Treatment for other infections

Read More : Click Here to check about Diabetes 

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