Scientific research evolution over the years ?

I am looking for a video that showed the quantitative evolution of scientific research over the years. 

It was a video that showed the main topics researched over the years and for example, you could see that at one time there was a lot of research on tuberculosis, then in the 70s ~ 90s a lot of research on HIV, then research on cancer and cerebrovascular diseases and cardiovascular diseases increase over the years 

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  • 4 weeks ago

    The HIV stuff also looked at how survivors of the plagues during the Middle Ages allowed for some of those descendants to have a natural immunity against HIV, which was amazing to find.

    Microbiology and nano technologies have advanced more than the cloning research in the past 3 decades.

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