[rdcbn]

The Chinese dumped their rejected test kits on the Czech’s as propaganda or perhaps sabotage

These kits give false Negatives - tell you that you are not infected when you actually are

Worse than no test at all - far more dangerous. If the Soviet Union had pulled this during the Cold War we would have called it an act of war

[rdcbn]

Correction, thats predominantly false negatives . Left a word out, but an important one