{"id":6631,"date":"2026-10-22T18:30:16","date_gmt":"2026-10-23T01:30:16","guid":{"rendered":"https:\/\/abovecloud.xyz\/?p=6631"},"modified":"2026-10-22T18:30:32","modified_gmt":"2026-10-23T01:30:32","slug":"a-mutated-virus-is-driving-the-us-into-an-early-flu-season-especially-on-the-west-coast","status":"publish","type":"post","link":"https:\/\/abovecloud.xyz\/?p=6631","title":{"rendered":"A mutated virus is driving the US into an early flu season, especially on the West Coast"},"content":{"rendered":"
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\n \t<\/i> Read Time:<\/span>4 Minute, 31 Second <\/div>\n\n <\/div>\n

Flu season is picking up months ahead of schedule with a mutated virus spreading in some parts of the United States, surprising some people who might not even be thinking about their annual flu shots yet.<\/p>\n\n\n\n

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This year, the season started 2 1\/2 months earlier than what\u2019s typical <\/strong>and hit states on the West Coast first, which is unusual, said Dr. Alex Greninger, head of the Division of Infectious Disease Diagnostics at the University of Washington\u2019s Department of Laboratory Medicine.<\/p>\n\n\n\n

Usually, the US flu season starts in the South \u2013 often in Florida, where it arrives from the Southern Hemisphere. Then it tends to spread north as fall and winter progress.<\/p>\n\n\n\n

\u201cIn Seattle, we\u2019re pretty far north. We see a pretty strong peak in January,\u201d Greninger said, noting that the bulk of their cases typically come in late December through February.

That\u2019s not how it\u2019s playing out this year.<\/p>\n\n\n\n

\u2018January levels of flu\u2019<\/h2>\n\n\n\n

Roughly 1 in 10 people tested for the flu in Washington state last week was positive, according to data from the state Department of Public Health.<\/p>\n\n\n\n

\u201cWe\u2019re basically seeing January levels of flu in the last week,\u201d Greninger said.

Walgreens says that nationally, this flu season is tracking<\/a> about four weeks ahead of recent seasons, and it\u2019s dispensing more antiviral prescriptions as well as cough and cold medications than during the same period last year.<\/p>\n\n\n\n

Nationally, about 2.1% of doctor visits last week were for influenza-like illness, a rough measure of the misery that flu symptoms like fever and cough are causing across the country. That\u2019s still below the national baseline, however, according to\u00a0data<\/a>\u00a0from the US Centers for Disease Control and Prevention, meaning the virus hasn\u2019t really taken off everywhere yet.

\u201cAll of the Pacific states, I would say, started their season very early, but we are now seeing as the season progresses a spread eastward, and so all regions of the country are seeing increases at this point,\u201d said Dr. Caitlin Rivers, an epidemiologist who directs the\u00a0Center for Outbreak Response Innovation<\/a>\u00a0at Johns Hopkins Bloomberg School of Public Health.

In the region that includes Arizona, California, Hawaii and Nevada, the proportion of flu tests that come back positive reached at least 10% last week, indicating significant levels of flu. The South is catching up to those numbers quickly, said Rivers, who closely tracks the flu through her Force of Infection<\/a> newsletter.<\/p>\n\n\n\n

A dominant strain<\/h2>\n\n\n\n

The wave of flu hitting the Pacific states came from Asia, Greninger said, and is dominated by the H1N1 virus, which sparked a pandemic<\/a> when it first emerged in 2009.<\/p>\n\n\n\n

It represents about 98% of the samples his lab is getting now, he said.

These H1N1 viruses\u00a0<\/strong>have also picked up a gene mutation that makes them better at evading our immunity.

This version of the virus has already wreaked havoc in Japan, where it forced school and day-care closures after cases surged in kids. It also prompted officials to move up vaccination clinics to help protect people.<\/p>\n\n\n\n

The mutation, at a location called <\/strong>G155E, cropped up after strains were already selected for this year\u2019s flu shots, Greninger said. So even though the vaccines target a version of H1N1 and should still offer some protection, the virus can still break through.<\/p>\n\n\n\n

Get vaccinated now, experts say<\/h2>\n\n\n\n

Greninger notes that the Covid-19 pandemic helped develop new tools that allow us to track the spread of viral variants almost in real time.

\u201cWe\u2019re getting closer and closer to the weather report, right?\u201d he said. \u201cWe can get the sequence quickly, so we can say exactly what the mutations are. What this really puts the focus on is, we\u2019ve got to be able to make these vaccines faster.\u201d<\/p>\n\n\n\n

The strains used in this year\u2019s flu shots were chosen in the spring, before the new viral variant had become a threat. They\u2019re selected so early because the majority of US flu shots are still grown in chicken eggs, a practice that persists, Greninger added, because it is so cheap.

There\u2019s a newly approved flu shot that uses mRNA technology, and he said that has the potential to make better shots available more quickly. Whether it will someday replace egg-based vaccines is a different issue \u2013 an economic one.

Doctors often advise getting a flu shot before Halloween, in order to provide the best protection through spring. But Greninger\u2019s best advice now is to get vaccinated as soon as possible. \u201cA lot of people, like even myself, would wait until late October, which we\u2019re sort of in already. But really, the time to get vaccinated was actually two to three weeks ago.\u201d

Other experts agree.<\/p>\n\n\n\n

\u201cIt is very early, and so I worry about vaccine timing,\u201d Rivers said. \u201cPeople aren\u2019t thinking about getting their flu vaccine so early in the season.\u201d

Whether that will make the overall season more severe remains to be seen.<\/p>\n\n\n\n

Greninger said there could also be <\/strong>a second wave of flu cases after H1N1 peaks.<\/p>\n\n\n\n

\u201cI wouldn\u2019t be surprised to see a second flu season, like a normal flu season. You\u2019ll have H1N1 cases that will peak in 2026, and then who knows what comes in January or February or March,\u201d he said. \u201cSo maybe interesting to watch.\u201d

Reprinted from CNN<\/p>\n

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