This is a bit out of date now but gives the background to the antibody test:
imperialbrc.nihr.ac.uk/2020/08/19/largest-study-on-home-coronavirus-antibody-testing-publishes-first-findings/
or
www.medrxiv.org/content/10.1101/2020.07.14.20151126v1
For long term immunity, memory T & B lymphocytes are needed and we do have to length of experience yet, to test for them but the antibody test we do have are over 90% reliable..
Fruit flies - help needed please.
Army horses loose on London streets
Have any of you got all electric cars? Pros and cons please.