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Sudden decrease in the number of serological HIV/AIDS testing in Japan in 2020. The number of serological HIV/AIDS testing had been plateaued counting 30,000 to 40,000 quarterly over the past 12 years; however, that number plunged into only 10,000 in the second quarter of 2020. (Data are from https://api-net.jfap.or.jp/status/japan/index.html)
