- What are the 4 types of diseases?
- How did Ebola start?
- What are 5 diseases caused by viruses?
- What is the number 1 killer in the world?
- What is the oldest virus ever?
- What is the most rare disease?
- Which disease has no cure?
- Are diseases caused by humans?
- What was the first disease known to man?
- What is the most common infectious disease in man?
- Which is the most contagious disease?
- Which disease is the most infectious?
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..
How did Ebola start?
The first human case in an Ebola outbreak is acquired through contact with blood, secretions organs or other bodily fluids of an infected animal. EVD has been documented in people who handled infected chimpanzees, gorillas, and forest antelopes, both dead and alive, in Cote d’Ivoire, the Republic of Congo and Gabon.
What are 5 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…
What is the number 1 killer in the world?
The world’s biggest killer is ischaemic heart disease, responsible for 16% of the world’s total deaths. Since 2000, the largest increase in deaths has been for this disease, rising by more than 2 million to 8.9 million deaths in 2019.
What is the oldest virus ever?
Pithovirus is the oldest virus to ever awaken from dormancy and remain infectious. It measures 1.5 micrometers long, about the size of a bacterium, making it the largest in a class of giant viruses that was discovered 10 years ago.
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. …
Which disease has no cure?
cancer. dementia, including Alzheimer’s disease. advanced lung, heart, kidney and liver disease. stroke and other neurological diseases, including motor neurone disease and multiple sclerosis.
Are diseases caused by humans?
Human-Induced Diseases do not only encompass infectious disease such as zoonoses whose spread is enhanced by human activities, but it also includes chronic disease linked to environmental perturbation caused by human activities.
What was the first disease known to man?
Oldest infectious disease of humans. Mycobacterium tuberculosis (MTB) may well be the oldest pathogen to haveinfected humankind. Modern humans (or homo sapiens) emerged out of the “hominid” group almost two million years ago, and began wandering out of Africa about 70,000 years ago to populate the world.
What is the most common infectious disease in man?
The 5 Most Common Infectious DiseasesHepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population. … Malaria. … Hepatitis C. … Dengue. … Tuberculosis.
Which is the most contagious disease?
The top five are as follows:HIV/AIDS: 1.6 million deaths in 2012.Tuberculosis: 1.3 million deaths in 2012.Pneumonia: 1.1 million children under the age of five, according to yearly estimates.Infectious diarrhea: 760,000 children under the age of five, according to yearly estimates.Malaria: 627,000 deaths.
Which disease is the most infectious?
History’s nine most contagious diseases: Where are they now?Smallpox. Emerging in human populations around 10,000 B.C., smallpox eventually killed between 300 and 500 million people worldwide, during the 20th century alone. … Rabies. … Tuberculosis. … Leprosy. … Typhoid Fever. … Bubonic and Pneumonic Plagues. … Malaria. … HIV/AIDS.