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pandemic alert level

Iranian women wearing masks wait for a taxi in a street of Tehran, Iran, Feb. 20, 2020. According to the Ministry of Health, two people diagnosed with coronavirus died in the city of Qom, central Iran. The disease caused by the virus (SARS-CoV-2) has been officially named COVID-19 by the World Health Organization (WHO). (ABEDIN TAHERKENAREH/EPA/CP)

Has coronavirus become a pandemic?

Timothy Sly: We don’t know if COVID-19 will slow during the summer months. If it does, be ready for at least a second wave in the fall, following the path of the 1918 influenza and the 2009 influenza.

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Swine flu: One step from a pandemic

The World Health Organization is bracing us for the worst.