HIV AIDS 1981- | |
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| Total costs | N/A |
| Deaths | 36300000 |
Human immunodeficiency virus infection and acquired immunodeficiency syndrome (HIV/AIDS) is a spectrum of conditions caused by infection with the human immunodeficiency virus (HIV), a retrovirus. Following initial infection a person may not notice any symptoms, or may experience a brief period of influenza-like illness. Typically, this is followed by a prolonged period with no symptoms. If the infection progresses, it interferes more with the immune system, increasing the risk of developing common infections such as tuberculosis, as well as other opportunistic infections, and tumors which are otherwise rare in people who have normal immune function. These late symptoms of infection are referred to as acquired immunodeficiency syndrome (AIDS). This stage is often also associated with unintended weight loss.HIV is spread primarily by unprotected sex (including anal and oral sex), contaminated blood transfusions, hypodermic needles, and from mother to child during pregnancy, delivery, or breastfeeding. Some bodily fluids, such as saliva, sweat and tears, do not transmit the virus.Methods of prevention include safe sex, needle exchange programs, treating those who are infected, as well as both pre- and post-exposure prophylaxis. Disease in a baby can often be prevented by giving both the mother and child antiretroviral medication.Known as the Berlin Patient and the London Patient, two individuals have been reported cured of AIDS and the NIH and Gates Foundation pledged $200 million focused on developing a global cure for AIDS. While there is not yet a broadly available cure or vaccine, antiretroviral treatment can slow the course of the disease and may lead to a near-normal life expectancy. Treatment is recommended as soon as the diagnosis is made. Without treatment, the average survival time after infection is 11 years.In 2020, about 37 million people worldwide were living with HIV and 680,000 deaths had occurred in that year. An estimated 20.6 million of these live in eastern and southern Africa. Between the time that AIDS was identified (in the early 1980s) and 2020, the disease has caused an estimated 36 million deaths worldwide. HIV/AIDS is considered a pandemic—a disease outbreak which is present over a large area and is actively spreading.HIV made the jump from other primates to humans in west-central Africa in the early-to-mid 20th century. AIDS was first recognized by the United States' Centers for Disease Control and Prevention (CDC) in 1981 and its cause—HIV infection—was identified in the early part of the decade. HIV/AIDS has had a large impact on society, both as an illness and as a source of discrimination. The disease also has large economic impacts. There are many misconceptions about HIV/AIDS, such as the belief that it can be transmitted by casual non-sexual contact. The disease has become subject to many controversies involving religion, including the Catholic Church's position not to support condom use as prevention. It has attracted international medical and political attention as well as large-scale funding since it was identified in the 1980s.
Source: Wikipedia 1916 Matheson fire | |
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| Total costs | N/A |
| Deaths | 223 |
The great Matheson Fire was a deadly forest fire that passed through the region surrounding the communities of Black River-Matheson and Iroquois Falls, Ontario, Canada, on July 29, 1916. As was common practice at the time, settlers cleared land using the slash-and-burn method. That summer, there was little rain, and the forests and underbrush burned easily. In the days leading up to July 29, several smaller fires that had been purposely set merged into a single large firestorm. It was huge; at times its front measured 64 kilometres (40 mi) across. The fire moved uncontrollably upon the towns of Porquis Junction, Iroquois Falls, Kelso, Nushka, Matheson, and Ramore, destroying them completely and causing extensive damage to Homer and Monteith. A separate fire burned in and around Cochrane. In all, the fires burned an area of approximately 2,000 square kilometres (490,000 acres). Because of forest fire smoke that had covered the region for several weeks and the absence of a forest fire monitoring service, there was almost no warning that the conflagration was upon the communities. Some people escaped on the Temiskaming and Northern Ontario Railway (now the Ontario Northland Railway), while others were saved by wading into the nearby Black River or one of the small lakes in the area. 223 people were killed according to the official estimate.The Matheson Fire led to the creation of the Forest Protection Branch of the Department of Lands, Forests, and Mines (now known as the Ministry of Natural Resources and Forestry) and the Forest Fires Prevention Act in Ontario.The great fires are the subject of the books Killer in the Bush by Michael Barnes, and Il pleuvait des oiseaux by Jocelyne Saucier.
Source: Wikipedia
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