California reported more than 7,000 new COVID-19 cases on Monday — the largest daily jump so far. Other parts of the U.S. are seeing COVID-19 spikes too, including Texas, Arizona, and Florida. This might be due to a small fraction of people infecting the majority of the population, according to James Lloyd-Smith, a professor of ecology and evolutionary biology at UCLA.
Superspreaders might be responsible for most COVID-19 cases
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