The reinfection rate and 95% CI of healthcare workers showed an increasing trend over time.
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How does the SARS-CoV-2 reinfection rate change over time? The global evidence from systematic review and meta-analysis.
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The sentences
The reinfection rate fluctuated with time, it first rose and then fell, and after a period of plateau then showed a trend of first rising and then falling again.
Thus, reinfection variant, country, and study type may be significant influencing factors for study heterogeneity.
Time-varying reinfection in the United States showed a decreasing trend over time.