What Is A Common Virus?

What is the number 1 killer in the world?

Heart disease—most commonly caused by coronary artery and valvular diseases—is the #1 killer in the United States.

It accounted for almost one-fourth of all registered deaths..

Which disease has no cure?

HIV/AIDS – No cure exists for HIV/AIDS, but medication exists that can help control the symptoms of it. Huntington’s disease – Inherited disease that causes the progressive breakdown (degeneration) of nerve cells in the brain. Hydrocephalus – No cure exists for this (physical)neurological disorder.

What are 3 common viral infections?

Examplesmeasles.rubella.chickenpox/shingles.roseola.smallpox.fifth disease.chikungunya virus infection.

What is a common viral infection?

Viral Infections Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves.

What is the deadliest disease in history?

Cholera, bubonic plague, smallpox, and influenza are some of the most brutal killers in human history. And outbreaks of these diseases across international borders, are properly defined as pandemic, especially smallpox, which throughout history, has killed between 300-500 million people in its 12,000 year existence.

Can you have two viruses at once?

From around four days after infection, the immune system produces antibodies to tag and destroy the virus particles and infected cells, but these are highly specific to that particular virus serotype. In theory, two different strains could infect you simultaneously, each requiring a separate immune response.

What is the most rare disease?

5 of the World’s Most Ultra-Rare DiseasesRPI deficiency.Fields Condition. … Kuru. … Methemoglobinemia. … Hutchinson-Gilford Progeria. More often referred to as Progeria, this disease affects about one in every 8 million children and, due to a genetic mutation, causes the appearance of rapid aging beginning in early childhood. …

What was the longest pandemic?

The Spanish flu pandemic was the largest, but not the only large recent influenza pandemic. Two decades before the Spanish flu the Russian flu pandemic (1889-1894) is believed to have killed 1 million people.

What was the last pandemic?

The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. Although there is not universal consensus regarding where the virus originated, it spread worldwide during 1918-1919.

What are the two most common viruses?

TABLE 1Organism or infectionNo. (%) of patients positive by:Total no. of patients (%)Virus antigen detectionInfluenza A virus6 (3)10 (5)Influenza B virus2 (1)2 (1)Adenovirus1 (0.5)2 (1)17 more rows

How long is a virus contagious for?

Most people will be infectious for around 2 weeks. Symptoms are usually worse during the first 2 to 3 days, and this is when you’re most likely to spread the virus.

How do you know if it’s viral or bacterial?

Your doctor often can diagnose you through a medical history and physical exam. The doctor may order blood or urine tests or a spinal culture to help pinpoint a viral or bacterial infection.

What are 3 diseases caused by viruses?

Viral diseasessmallpox.the common cold and different types of flu.measles, mumps, rubella, chicken pox, and shingles.hepatitis.herpes and cold sores.polio.rabies.Ebola and Hanta fever.More items…•

How are viruses controlled?

Many viral diseases are controlled by reducing exposure to the virus by (1) eliminating nonhuman reservoirs, (2) eliminating the vector, and (3) improving sanitation.

What were the 3 plagues?

There are three basic forms of plague:Bubonic plague. The most common form of plague is bubonic plague. … Septicemic plague. When the bacteria enter the bloodstream directly and multiply there, it’s known as septicemic plague. … Pneumonic plague.

What is the most common virus?

The most common type of viral disease is the common cold, which is caused by a viral infection of the upper respiratory tract (nose and throat). Other common viral diseases include: Chickenpox. Flu (influenza)

Which plague killed the most?

the Black DeathThe most fatal pandemic in recorded history was the Black Death (also known as The Plague), which killed an estimated 75–200 million people in the 14th century. The term was not used yet but was for later pandemics including the 1918 influenza pandemic (Spanish flu).

When did the Black Death End?

1346 – 1353Black Death/Periods