According to foreign media reports, the number of confirmed COVID-19 cases in the United States has steadily declined in the past few weeks. Epidemiologists say there may be several reasons for this decline: The United States has passed the holiday season surge, and people have changed their behavior in response to the winter peak. And now, many people have antibodies against the virus because of previous infections. But vaccines may not be the driving factor of this decline-not enough people have been fully vaccinated against COVID-19, and when confirmed cases start to decline, the vaccination rate is still relatively low.

However, the vaccination rate of some people is high enough and the benefits are beginning to show. Connecticut was one of the first states to complete vaccination of long-term care facilities and nursing homes. All residents who wanted to be vaccinated received the first dose of the vaccine before January 8, and most people had all been vaccinated before the end of January.

The impact is huge. By the end of 2020, approximately 400 nursing home residents in Connecticut will test positive for the new crown every week, and approximately 100 have died. In the week ending February 2, when most people completed the vaccination, there were 101 cases and 35 deaths-a decrease of nearly 80% from the previous month.

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