HIV
Studies suggest that HIV was present
in North America, South America, Europe,
Africa, and Australia before 1980.
Clinical trials of HIVvaccineto start in the US (Sept 2023)
COVID
23 January – The Foreign and Commonwealth Office advises against all but essential travel to the city of Wuhan, the original epicentre of the outbreak.
The first human trials of a COVID-19vaccinein Europe begin in Oxford.
April 23rd 2020
HIV vaccine has taken 43 years to develop.
COVID vaccine as rolled out in3 months