Health disasters

The human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. Without treatment, it can lead to a spectrum of conditions including acquired immunodeficiency syndrome (AIDS). It is a preventable disease. It can be managed with treatment and become a manageable chronic health condition. While there is no cure or vaccine for HIV, antiretroviral treatment can slow the course of the disease, and, if used before significant disease progression, can extend the life expectancy of someone living with HIV to a nearly standard level. An HIV-positive person on treatment can expect

thumb|300px|Early in the COVID-19 pandemic, [[convention centers (pictured here) were deemed to be ideal sites for temporary hospitals, due to their existing infrastructure (electrical, water, sewage). Hotels and dormitories were also considered appropriate because they can use negative pressure technology.]]

infection caused by any one of several types of swine influenza viruses

Anthrax is an infection caused by the bacterium Bacillus anthracis or Bacillus cereus biovar anthracis. Infection typically occurs by contact with the skin, inhalation, or intestinal absorption. Symptom onset occurs between one day and two months after the infection is contracted. The skin form presents with a small blister with surrounding swelling that often turns into a painless ulcer with a black center. The inhalation form presents with fever, chest pain, and shortness of breath. The intestinal form presents with diarrhea (which may contain blood), abdominal pains, nausea, and vomiting.

infectious and sometimes fatal viral disease that affects cloven-hoofed animals and caused by apthovirus

illness resulting from food that is spoiled or contaminated by pathogenic bacteria, viruses, parasites or toxins

counterpart in cattle to variant Creutzfeldt-Jakob disease

resistance of microbes to drugs directed against them

The Therac-25 was a computer-controlled radiation therapy machine produced by Atomic Energy of Canada Limited (AECL) in 1982 after the Therac-6 (neptune) and Therac-20 units (the earlier units had been produced in partnership with of France).

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misuse or overuse of antibiotics, with potentially serious effects on health

difficult situation or complex health system that affects humans in one or more geographic areas

use of antibiotics for any purpose in the husbandry of livestock

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