https://www.ibtimes.co.uk/why-it-so-hard-find-vaccine-hiv-1593486
World Aids Day 2016: Why is it so hard to find a vaccine for HIV? | IBTimes UK
Nov 30, 2016 - The first large HIV vaccine trial in seven years is set to start in South Africa - many others before have failed.
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https://born2invest.com/articles/small-biotech-companies-vaccine-covid-19/
Small biotech companies have also entered the race to find a vaccine against COVID-19
Jul 6, 2020 - An impressive number of biotech companies have entered the race to find a vaccine that would put an end to the coronavirus pandemic. Among them are small caps...
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