In communist China, PCR test follows you:
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In Hanzhong city of Shan'xi province, a PCR tester went into the potato field to swab sample from a local farmer.
The tester was in the village to collect test samples for all the locals. When he found out that this old man and his wife were not at home, he followed them to their farm field where they were planting potato.
The local village staff accompanying the tester took this picture.