[ad_1] Today a study begins to examine the collective immunity of citizens to the coronavirus, as well as the percentage of asymptomatic cases in the population. Source: RTS Monday, 05/04/2020. | 10:57 -> 11:05 Photo: Depositphotos, HayDmitriy The study will involve 17,000 citizens, which are around 7,000 households. Any home …
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