New data shows that people living in four states are still suffering the highest levels of COVID-19 infections in the country, according to the Centers for Disease Control and Prevention (CDC).
Iowa, Kansas, Missouri, and Nebraska remain the worst-hit states as more people there have been diagnosed positive for the virus than elsewhere in the country.
Due to its rapid growth and potential to add to the respiratory virus burden in Northern Hemisphere countries, the World Health Organization (WHO) today designated JN.1, part of the BA.2.86 SARS-CoV-2 lineage, as its own variant of interest.
Over the past month, the proportion of JN.1 viruses has rapidly increased, rising from 3.3% in early November to 27.1% by early December. Countries reporting the highest proportions include France, the United States, Singapore, Canada, and the United Kingdom.
The fact that JN.1 is responsible for a growing portion of infections suggests it is either more contagious or better at getting past our bodies’ immune defenses than previous iterations of the virus, the CDC says. But there is no evidence that it causes more severe disease. The World Health Organization (WHO) has not labeled JN.1 a variant of concern—that is, a new strain of the SARS-CoV-2 virus with potential for increased severity; decreased vaccine effectiveness; or substantial impacts on health care delivery.
A study today of viral shedding dynamics in 101 children who had COVID-19 during the Omicron surge in Toronto shows that 40% were still infectious on the day after their symptoms resolved.
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