What to know about the surging "winter vomiting bug" and its contagious new variant
Briefly

What to know about the surging "winter vomiting bug" and its contagious new variant
"Sickness from norovirus, often referred to as the "winter vomiting disease" or "winter vomiting bug," could require medical attention or even hospitalization for immunocompromised people, the elderly and children. Driving the news: Cases of the norovirus have picked up in California in recent weeks as a new subvariant - GII.17 - has caused a batch of cases, per the Los Angeles Times."
"By the numbers: For the week ending on Dec. 9, the national positivity rate was at 9.9%, per the Centers for Disease Control and Prevention. It has since climbed to 12.11% for the week ending on Dec. 13. Read more below to learn about the norovirus. What does norovirus do to you? In general, the norovirus is a contagious disease that causes extreme cases of vomiting and diarrhea because of inflammation of the stomach and intestines, per the CDC."
Norovirus infections have increased in multiple U.S. regions, with California showing notable rises tied to the GII.17 subvariant. Several states including Michigan, New Jersey, North Carolina, Texas, Oklahoma, Colorado, Alabama, Montana and Wyoming report upticks. National laboratory positivity rose from 9.9% for the week ending Dec. 9 to 12.11% for the week ending Dec. 13, per CDC. Norovirus causes intense vomiting and diarrhea through inflammation of the stomach and intestines and affects roughly 20 million people annually. GII.17 expanded from about 7.5% of outbreaks in 2022–23 to 75.4% the following season, displacing prior dominant variants.
Read at Axios
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