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Jan 8, 2024 · January 8, 2024. 6 min read. What to Know about the New COVID Variant JN.1. A new variant of the COVID-causing virus SARS-CoV-2 is behind the latest surge in infections this winter, but it...
Dec 27, 2023 · Neither EG.5 nor HV.1 appear to be more contagious or more likely to cause severe illness than earlier variants. Diagnostic tests and treatments such as Paxlovid also continue to be effective...
- 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.
Nov 4, 2023 · The main variant in the United States is omicron. This variant spreads more easily than the original virus that causes COVID-19 and the delta variant. But omicron seems to cause less severe disease. Omicron has a few major offshoots, also called sublineages. Together the omicron variants make up nearly all COVID-19 infections in the United States.
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.
Sep 1, 2023 · Can vaccination prevent it? The CDC says that while breakthrough infections in vaccinated people are expected, staying up to date with vaccinations is the best protection against Omicron. Scientists are evaluating the effectiveness of a new fall 2023 updated COVID-19 booster against EG.5 and BA.2.86, according to the CDC.
Aug 6, 2021 · SCIENCE. 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...
