COVID-19 cases spike significantly in the past week

Omicron variant likely cause

OLYMPIA — The state of Washington is seeing a spike in COVID-19 cases, and transmission is expected to rise in the coming weeks. While it is still too early to tell how much of the increase is due to Omicron, epidemiologists with the Washington State Department of health (DOH) agree that Omicron prevalence is increasing and is most likely the dominant strain.

While additional data are still being sent to the state, the largest single-day report of new cases so far occurred on December 24, with 6,140 new COVID-19 cases. Despite a recent increase in testing around the holidays, public health officials say the increase in new cases significantly outpaces the increase in testing. The number of cases is expected to continue to increase through the new year.

The spike in cases, together with the first cases of the flu this season, will likely mean increased hospitalizations in the near future, raising concerns about the state’s health care system. Washington state’s hospitals and clinics are already stretched and strained due to an exhausted and understaffed workforce who have been caring for more patients than ever before.

About Omicron

State Epidemiologist for Communicable Diseases, Scott Lindquist, MD, MPH, says Omicron likely has overtaken the Delta variant in Washington or will very soon based on sequencing information from the University of Washington, our state, and the CDC.

“What we are seeing now is the leading edge. Our focus is on getting a better picture of how and where Omicron is spreading,” he said. “It is not just about counting Omicron cases. It is about sampling the entire state so we can understand the prevalence of the variant beyond high-population areas. Washington state has one of the most extensive genotyping systems in the U.S., which allows us to track a variant’s spread faster than many other states.”

Studies are ongoing to determine the effectiveness of vaccines and therapeutic treatments, such as monoclonal antibodies and oral antivirals, against Omicron. Based on initial information, it appears that most monoclonal antibodies may not be as effective against this variant, although Sotrovimab, a medication that the FDA is allowing for emergency use to treat COVID-19, may be more effective against Omicron.

Early results also indicate that the initial vaccine series may be less effective at preventing infection with the Omicron variant, but still offer substantial protection against infection and severe illness. Receiving a booster dose may improve protection against severe disease with Omicron.

Omicron Variant Increases Worries and Gives Momentum to COVID-19 Booster Shots

The emergence of the omicron COVID-19 variant is encouraging many already vaccinated adults to get a recommended booster shot but is providing only a little motivation for unvaccinated adults to get an initial shot, a new KFF COVID-19 Vaccine Monitor quick response survey finds.

Fielded from Dec. 15-20 to provide an early look at omicron’s potential impact on the public’s vaccination intentions, the survey finds that about half (54%) of vaccinated adults who haven’t gotten a booster dose say news of the omicron variant will make them more likely to do so.

Omicron’s emergence appears to be having a much smaller, but not insignificant, effect on unvaccinated adults. The survey finds that 12% of those who are unvaccinated say it makes them more likely to get an initial shot, but a much larger share (87%) say it does not make them more likely to do.

Read the full article from KFF.

COVID-19 Variants: Omicron Rising

About the Data Insights

Omicron was first detected in the U.S. on December 1st and scientists are racing to understand the variant. Preliminary data suggests Omicron spreads more rapidly than other variants and is milder, although some scientists think it’s too early to know.

The recent arrival of Omicron to the United States has raised concerns about vaccine effectiveness and the future of the pandemic as we head into the new year. The emergence of variants and persistent vaccine inequality highlights the global nature of the pandemic. As more Americans are getting their booster shots, efforts are underway to get initial doses of vaccines to poor countries.

Omicron COVID-19 variant discovered in three counties across Washington

The Washington State Department of Health (DOH), in partnership with the UW Medicine Virology Lab, has confirmed a total of three cases of omicron variant found in Thurston County, Pierce County, and King County. The patients range in age from 20 to 39, two men, one woman.

The patients are:

  • a man in his thirties from Thurston County,
  • a man in his twenties from Pierce County, and
  • a woman in her twenties from King County.

Confirmation came in midday Saturday, and patients are still being informed. Details about their conditions are unknown to DOH. Samples were collected between Nov. 29 and Dec. 1 and confirmed at an in-state lab.

This is early in the investigation, DOH does not believe the cases are related, but the travel history of the patients is unknown.

Little is known clinically about the omicron variant at this time. Researchers are working to learn more about it, but it was found here quickly thanks to increased surveillance efforts; lab specialists have been looking for omicron through PCR testing and genomic sequencing. The state also increased its lab capacity to detect genetic markers associated with new and existing variants.

Sequencing has been prioritized for anyone with travel history or close contact with a confirmed case. Case investigation and contact tracing among those at higher risk for contracting and spreading omicron has been prioritized. Travelers who have been to a country or state with omicron, or anyone identified as a close contact, receives that prioritization.

“We knew that it was a matter of time before omicron was sequenced in our state and so we were anticipating this very news,” said Umair A. Shah, MD, MPH, Secretary of Health. “We strongly urge people to get vaccinated and get their boosters as soon as possible to maximize their level of protection from any variant.”

The best protection from this variant and others comes from getting vaccinated and getting boosters as soon as possible. This is especially important for children and adults with chronic conditions that place them at higher risk for severe disease from COVID-19.

“Even with a highly mutated virus like omicron, we are not going back to square one of the pandemic,” said Dr. Jeff Duchin, Health Officer, Public Health – Seattle & King County. “Omicron may pose new challenges that we will need to respond to, but compared to the early days of the pandemic, we know much more about COVID-19, and we’re better prepared for it. We know layered protections work together to maximally reduce risk, and that will continue to be the case for delta and for omicron if that becomes a dominant strain circulating in our community.”

“If there is room for improvement in how we are using our current tools and strategies, this is a good time to make those improvements, especially vaccination and booster doses when eligible, good-quality masks indoors, improving indoor air quality and avoiding crowded indoor spaces along with other COVID-19 prevention measures,” Duchin said.

“We suspected that the omicron variant was circulating in our region, and now our laboratory has confirmed the first three cases in Washington state by viral genome sequencing in the last 24 hours. Throughout the pandemic, it’s been a huge team effort by the UW Medicine Virology Laboratory, requiring development and implementation of several diagnostic and sequencing assays to detect and confirm the variety of COVID-19 variants that have surfaced in Washington state,” said Dr. Geoffrey Baird, chair of Laboratory Medicine and Pathology at UW Medicine. To date, the laboratory has tested approximately 3.8 million COVID-19 samples.