Question

what are the main causes of disease​

Answer 1

Explanation:

Diseases can be caused by:

1. Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
2. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
3. Fungi. Many skin diseases, such as ringworm and athlete's foot, are caused by fungi. Other types of fungi can infect your lungs or nervous system.
4. Parasites. Malaria is caused by a tiny parasite that is transmitted by a mosquito bite. Other parasites may be transmitted to humans from animal feces.

Answer 2

Explanation:

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.

Diseases are often known to be medical conditions that are associated with specific symptoms and signs. A disease may be caused by external factors such as pathogens or by internal dysfunctions.

Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.

What are the 10 most common diseases?

Heart disease. Share on Pinterest Many of the top 10 causes of death are preventable through lifestyle changes and regular checkups. ...

Cancer. Deaths in 2017: 599,108. ...

Unintentional injuries. ...

Chronic lower respiratory disease. ...

Stroke and cerebrovascular diseases. ...

Alzheimer's disease. ...

Diabetes. ...

Influenza and pneumonia.

Humans can become infected by a virus in contaminated food or water. The virus enters the body through the stomach or bowels when the contaminated food or water is swallowed. Viruses spread through food or water often affect the gastrointestinal tract and cause symptoms such as nausea, vomiting, and diarrhea.

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