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Jan 8, 2024 · A new variant of the COVID-causing virus SARS-CoV-2 is behind the latest surge in infections this winter, but it doesn't appear to cause more severe disease.
- kathy.katella-cofrancesco@yale.edu
- Where did JN.1 come from, and how is it different? The JN.1 strain surfaced in the U.S. in September. It is a close relative of BA.2.86 (informally referred to as “Pirola”), a lineage of the Omicron variant that the CDC has been tracking since August.
- What do we know—and not know—about JN.1? Although there is not yet enough evidence to say anything definitively, JN.1 does not seem to cause more cases of severe disease or symptoms that differ from those associated with previous strains.
- How can people protect themselves against these new coronavirus subvariants? Anticipation of three viruses—SARS-CoV-2, influenza, and RSV—hitting around the same time in the fall and winter has contributed to fears of a “tripledemic” in recent years.
Dec 27, 2023 · Right now, two variants, JN.1 and HV.1, comprise more than half of Covid cases in the United States. JN.1 accounted for 44 percent of cases as of late December, according to the Centers for...
Apr 8, 2022 · A variant of concern has been observed to be more infectious, and is more likely to cause breakthrough infections or reinfections in those who are vaccinated or previously infected. These variants are more likely to cause severe disease, evade diagnostic tests, or resist antiviral treatment.
Nov 4, 2023 · Concern over variants, sometimes called strains, of the virus that causes COVID-19 is based on how the virus might change. A virus could get better at infecting people, spread faster or cause people to get sicker.
Sep 1, 2023 · Although new variants are an expected part of the evolution of viruses, monitoring each one that surfaces is essential in ensuring we—in the U.S. and globally—are prepared.
Aug 6, 2021 · CORONAVIRUS COVERAGE. Why is Delta more infectious and deadly? New research holds answers. Studies show that Delta replicates more quickly and generates more virus particles than other...
