@LongDesertTrain @nasirfmusiqi The decline in late 2021 looks basically the same as the decline in late 2019. Assuming the latter is not SARS-CoV-2, I don't see a clear connection.
@ LongDesertTrain @ NasifMusiqi，2021年底的下降基本上与2019年底的下降基本相同。假设后者不是SARS-CoV-2，我看不出有明显的联系。