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The country鈥檚 leading COVID-19 variant is still rare in Oregon

FILE: Clackamas Community College nursing student Nina Tan draws up doses at a pediatric COVID-19 vaccine clinic held at Clackamas Town Center, Nov. 10, 2021 in Happy Valley, Ore.
Kristyna Wentz-Graff
/
OPB
FILE: Clackamas Community College nursing student Nina Tan draws up doses at a pediatric COVID-19 vaccine clinic held at Clackamas Town Center, Nov. 10, 2021 in Happy Valley, Ore.

The most common COVID-19 variant in the U.S. is still rare in Oregon, according to from the Oregon Health Authority.

Omicron EG.5 was first identified this year, and has become the U.S.鈥檚 most dominant variant. It now makes up nearly a quarter of national cases, the CDC .

However, the sub-variant has been relatively unsuccessful in Oregon, peaking in July with a less than a 10% share of cases. And for the first two weeks of October, officials didn鈥檛 detect the variant at all within limited sample sizes.

Instead, recent data has shown a split between several other omicron offshoots in Oregon, commonly among those from the XBB lineage.

鈥淚t is a ton of little tiny variants causing a few percent of the disease each,鈥 said Dr. Paul Cieslak, the Medical Director for Communicable Diseases & Immunizations at the OHA.

Cieslak theorizes that EG.5 arrived too late to dominant in this competitive environment. He said no new variant has taken over like delta or the original omicron once did.

鈥淭here鈥檚 just been fragmentation of all the omicron variants,鈥 he said. 鈥淪o little mutations here and there, but not terribly different from each other.鈥

The World Health Organization is EG.5 as a variant of interest, as it may be more infectious or immune-resistant. However, Cieslak said he suspect those advantages are marginal.

He said some immunity overlaps between the offshoots, and the distinctions aren鈥檛 that important for public health. As of September, WHO has found no indication that infections from EG.5 are more severe.

More data on variants is available online through the . Additionally, the service has expanded to include information on influenza and RSV.

The dashboards display weekly data on outbreaks and hospitalizations in Oregon, as well as what percentage of tests are positive.

鈥淭his provides information regarding the urgency of getting vaccinated, for example, or getting tested should you develop symptoms,鈥 said Cieslak.

Also new is a map of wastewater data, which estimates the scale of infection in different regions, primarily across Western Oregon. Cieslak said viral trends can take multiple weeks to travel across the state.

The data doesn鈥檛 update in real-time, with some metrics falling weeks behind. Cieslak said virus conditions can change quickly, but this service will still show larger trends.

Cieslak said the dashboard will help high-risk people know when to take necessary precautions, such as wearing masks or avoiding crowded indoor spaces.

Copyright 2023 KLCC

Nathan Wilk is a JPR content partner from NPR member station KLCC in Eugene. Nathan is a graduate from the University of Oregon School of Journalism and Communication.