HIV AIDS: Difference between revisions
From WikiDemocracy
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 16: | Line 16: | ||
[https://www.pbs.org/wgbh/pages/frontline/aids/virus/origins.html by Mary Carmichael FRONTLINE] | [https://www.pbs.org/wgbh/pages/frontline/aids/virus/origins.html by Mary Carmichael FRONTLINE] | ||
As soon as HIV was identified in 1983, scientists started trying to understand where it had come from, when it had arisen, and why it had spread. Were they too late? To answer most of their questions, they would have had to witness the virus's evolution. Scientists can track new pathogens such as SARS and avian flu because they produce obvious symptoms almost immediately. But HIV is a stealth virus that takes as many as 10 years to present symptoms; by the time researchers knew enough to wonder about its origins, those origins were in the distant past. | As soon as HIV was identified in 1983, scientists started trying to understand where it had come from, when it had arisen, and why it had spread. Were they too late? To answer most of their questions, they would have had to witness the virus's evolution. Scientists can track new pathogens such as SARS and avian flu because they produce obvious symptoms almost immediately. But HIV is a stealth virus that takes as many as 10 years to present symptoms; by the time researchers knew enough to wonder about its origins, those origins were in the distant past. | ||
=====Aids: Origin of pandemic 'was 1920s Kinshasa'===== | |||
[https://www.bbc.com/news/health-29442642 by BBC] | |||
An international team of scientists say a "perfect storm" of population growth, sex and railways allowed HIV to spread. | |||
