Question: What Are The 5 Causes Of Disease?

What is the scariest disease?

5 Scariest Disease Outbreaks of the Past CenturyInfluenza.

From the gruesome flu pandemic that killed an estimated 50 million to 100 million people in 1918, to the 2009 swine flu pandemic that took thousands of lives, different strains of influenza viruses have caused some of the deadliest outbreaks of the past century.

SARS.

HIV/AIDS.

Malaria.

Tuberculosis..

What are the 10 common diseases?

Read on to see the top 10 diseases causing the most deaths worldwide, according to the World Health Organization (WHO) .Ischemic heart disease, or coronary artery disease. … Stroke. … Lower respiratory infections. … Chronic obstructive pulmonary disease. … Trachea, bronchus, and lung cancers. … Diabetes mellitus.More items…

What can kill pathogens?

165°F: To kill any pathogens that might be living in your food, cook them at 165°F or boil them in water at least that hot. These temperatures can also kill any germs that might be contaminating your drinking water.

Is a virus a disease or 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 disease Short answer?

Disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.

What animal kills the most humans a year?

MosquitoesListSource: CNETSource: BBC NewsAnimalHumans killed per year1Mosquitoes725,0002Humans (homicides only)50,0003Snakes25,0007 more rows

What has killed the most humans in history?

Wars and armed conflicts with highest estimated death tolls of 100,000 or moreEventLowest estimateGeometric mean estimateWorld War II60,000,00084,269,920Three Kingdoms36,000,00037,947,332Mongol conquests30,000,00034,641,016European colonization of the Americas8,400,00034,047,02647 more rows

Are diseases curable?

Some diseases can be cured. Others, like hepatitis B, have no cure. The person will always have the condition, but medical treatments can help to manage the disease. Medical professionals use medicine, therapy, surgery, and other treatments to help lessen the symptoms and effects of a disease.

What are the causes of disease Class 9?

They are used for diseases caused by bacteria….Related Stories.S. No.Type of DiseaseExample1.Air born DiseasesCommon cold, influenza, measles, tuberculosis.2.Water born diseasesCholera, typhoid, hepatitis.3.Sexual DiseasesAIDS, Syphilis.4.Animal born DiseaseRabbis.May 26, 2020

What are the 4 types of diseases?

There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), and physiological diseases. Diseases can also be classified in other ways, such as communicable versus non-communicable diseases.

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.

What disease kills the fastest?

Flesh Eating Bug. This bug can quickly sweep through the body eating the body’s soft tissue. … Cholera. This is an intestinal disease caused by eating contaminated water or food and can kill anyone within hours. … Enterovirus D68. … Bubonic Plague. … Ebola. … Dengue Fever.

What are the causes of diseases?

Infectious diseases can be caused by:Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.Fungi. … Parasites.

How do viruses multiply?

To identify the correct host, viruses have evolved receptors on their surfaces that match up with those of their ideal target cell, letting the virus get its genetic material inside and hijack its host’s cellular machinery to help it reproduce by multiplying the virus’ genetic material and proteins.

What disease has no cure?

Top 10 Mysterious DiseasesAIDS. Twenty-five years since it was first identified, there is still no cure for Acquired Immune Deficiency Syndrome. … Alzheimer’s Disease. (Image credit: stock.xchng) … Avian Flu. … Pica. … Schizophrenia. … Creutzfeldt-Jakob Disease.

What are the 5 diseases?

Infectious diseases can be any of the following:Chickenpox.Common cold.Diphtheria.E. coli.Giardiasis.HIV/AIDS.Infectious mononucleosis.Influenza (flu)More items…

What are the six diseases?

Childhood mortality: six killer diseases and how to stop themPneumonia. Pneumonia, usually caused by a bacterial infection, is a disease in which the air sacs in the lungs become inflamed and fill up with fluid. … Diarrhoea. Diarrhoea is caused by an infection in the intestinal track. … Malaria. … Meningitis. … HIV. … Measles.

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).

How do we identify a disease?

Disease gene identification techniques often follow the same overall procedure. DNA is first collected from several patients who are believed to have the same genetic disease. Then, their DNA samples are analyzed and screened to determine probable regions where the mutation could potentially reside.

What causes most deaths in the world?

Summary. Cardiovascular diseases are the leading cause of death globally. The second biggest cause are cancers.

What are the 5 pathogens?

Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms. Some common pathogens in each group are listed in the column on the right. Infectious agents can grow in various body compartments, as shown schematically in Fig.