When you check out the German requirements for tests they accept either PCR or antibody tests.
But the PCR test is the one being generally used throughout the world.
The problem with the RT-PCR test is that the reliability of the results depends upon the setting of the Cycle Threshold (CT) value. It has been conclusively proven that any values over 25 will produce false positives.
However in order to increase the fear-mongering and panic, the CT values were set around 35-40 so these would will losts and lots of so-called "cases". But according to Swiss Policy Research:
"A PCR test is amplifying samples through repetitive cycles. The lower the virus concentration in the sample, the more cycles are needed to achieve a positive result. Many US labs work with 35 to 45 cycles, while many European labs work with 30 to 40 cycles.
The research group of French professor Didier Raoult has recently shown that at a cycle threshold (ct) of 25, about 70% of samples remained positive in cell culture (i.e. were infectious); at a ct of 30, 20% of samples remained positive; at a ct of 35, 3% of samples remained positive; and at a ct above 35, no sample remained positive (infectious) in cell culture (see diagram)."
https://swprs.org/the-trouble-with-pcr-tests/
Which means that 90-99% of the results turned out to be false positives. So when the vaccines failed and vaccinated people began to test positive, the medical establishment had to protect itself. So WHO sent out a circular recently telling the health agencies to reduce the CT value so that less people would test positive. And FDA has banned the use of the PCR test effective December 2021!
It should be obvious that there has been MAJOR MEDICAL FRAUD from day one. Nothing being reported should be trusted, and even the VAERS and Eudravigilance data is being manipulated.