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- 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 ...
Aug 25, 2023 · Yes, it is so. Viruses mutate, new variants emerge. That's happened a number of times with SARS-CoV-2 since the start of the pandemic in 2020. And it's happening again. In mid-August, the Centers ...
- Fran Kritz
Dec 19, 2023 · The Centers for Disease Control and Prevention (CDC) first referenced the JN.1 subvariant back in September. By the end of October, JN.1 made up less than 0.1% of SARS-CoV-2 viruses while BA.2.86 grew in prevalence. But now, BA.2.86 only accounts for about 1.6% of variants circulating in the United States.
Sep 1, 2023 · How long do COVID symptoms last? COVID-19 symptoms appear about 2-14 days after exposure to the virus, according to the CDC. People who test positive for COVID-19 typically have symptoms for a couple weeks. People who have long COVID (also known as long-haulers) can have persistent symptoms that last at least 12 weeks after infection.
Jan 8, 2024 · The covid virus is continually changing, and a recent version is rapidly climbing the charts. Even though it appeared only in September, the variant known as JN.1, a descendant of omicron, is ...
Aug 17, 2023 · How long does Omicron last? This variant has an incubation period of just over 3 days. If you have Omicron or any variant of COVID-19, you will likely have symptoms for a couple of weeks.
