[Question] Is rapid diagnostic testing (RDT), such as for coronavirus, a neglected area in Global Health?

I wonder why it took so long for Western governments to take measures to develop/​buy rapid test kits for Cov-19. Is there anything charities can do about it—now, or in the future?

I checked this question, but, despite being the first idea, there was no feedback concerning RDTs.

First, RDT has been an important tool against other epidemics—HIV, ebola, zika, etc. Second, it was part of the contention strategy in Asia. If you can identify infected people quickly, you can respond way more effectively. Third, safe vaccines and treatment take a lot of time to be developed, and are often invasive. Not RDTs.

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