Wondfo (Cellmid tests) are the same as the UK tests. Note - UK ordered 1 mil from Wondfo and 1mil from another supplier, they have since ordered 3.5 mil from Wondfo.....see link
https://www.itv.com/news/2020-04-01/a-million-covid-19-test-kits-are-arriving-in-the-coming-week-but-will-they-be-deployed-to-hospitals/
On the second point you are correct. Antibodies form from the moment your body starts fighting an infection so ultimately this means that these POCT can detect an infection while it is still active (and you’re infectious) in your body. The point is the more antibodies you have (meaning further along the infection timeline through to recovery) the easier it is to detect them. This is why accuracy increases with time.
It is my understanding that people will receive a baseline POC test and then receive a second one 7-10 days later to ascertain presence of antibodies which in turn reflects a positive infection. The 7-10 day period allows formation of antibodies fighting the infection which in turn significantly increases accuarcy. Theoretically this means people will be tested twice at a minimum, effectively doubling the depth of the market (This is what occurs in the UK).
Having antibodies means your body has fought the virus and built a defence against them.......in real terms this means any further exposure to the virus will not result in a new infection in almost all cases because your body already has the antibody defence in place.....basically you have developed your own natural vaccine.
These tests are stage 2 of the fight against Covid-19, the most important part, getting the world back to work and moving the world back in to a stage of normality.
Ascertaining who has HAD the virus and subsequently developed antibodies allows us to send those people back out to live a normal life as they are highly unlikely to get the virus again (unless it mutates....then god help us all!!!)
I see these tests needing to be passed by every man, woman and child before they can head back to school or work. The only other way to stop the spread is a vaccine that can be mass produced.....we’re nowhere near that point yet.
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