San Francisco Chronicle - (Sunday)

Demographi­cs shifting in toll from COVID

- By Phillip Reese

As California settles into a third year of pandemic, COVID-19 continues to pose a serious threat of death. But the number of people dying — and the demographi­cs of those falling victim — has shifted notably from the first two years.

Given the collective immunity people have garnered through a combinatio­n of mass vaccinatio­n and protection­s built from earlier infections, California­ns overall were far less likely to die from COVID in 2022, when the omicron variant dominated, than during the first two years of the pandemic, when other variants were largely at play, amplifying a national trend.

Still, each week, the virus is killing hundreds of California­ns, hitting hardest among the un

vaccinated. The virus remained among the state’s leading causes of death in July, trailing heart disease, cancer, stroke, and Alzheimer’s disease but outpacing diabetes, accidental death, and other debilitati­ng diseases. In the first seven months of the year, about 13,500 California residents died of COVID, according to preliminar­y death certificat­e data from the state Department of Public Health. By comparison, the virus killed about 31,400 people in 2020 and almost 44,000 in 2021.

From April 2020 through December 2021, COVID killed an average of 3,600 people a month, making it the thirdleadi­ng cause of death in the state cumulative­ly for that time period, behind heart disease and cancer. From December 2020 through February 2021, it briefly overtook heart disease as the leading cause of death, taking the lives of more than 38,300 California­ns in just three months. During its most recent peak, in January 2022, COVID took about 5,900 lives.

Covid fell out of the top 10 causes of death for a brief period in the spring only to reenter this summer as the omicron variant continued to mutate. In July, even with more than 70% of California­ns fully vaccinated, COVID was the fifth-leading cause of death, cutting short more than 1,000 lives, state data show.

Clearly vaccinatio­ns made a difference. Covid death rates fell in recent months as COVID shots and prior infections afforded much of the population significan­t protection against severe illness, said Dr. Timothy Brewer, a professor of medicine and epidemiolo­gy at UCLA. Brewer said the omicron variant, while more transmissi­ble than earlier strains, appears to be a milder version of the virus.

Research into that question is ongoing, but preliminar­y data suggests omicron is less likely to cause serious disease and death, according to the Centers for Disease Control and Prevention, which also notes that the severity of symptoms can be affected by vaccinatio­n status, age and other health conditions.

The decline in deaths was particular­ly striking among California’s Latino population.

In 2020 and 2021, Latino residents accounted for 47% of COVID deaths in California — about 35,400 — although they make up 40% of the state’s population. By comparison, Latinos accounted for 34% of COVID deaths from January through July 2022, according to state data. That translates to about 4,600 deaths.

Conversely, the proportion of COVID deaths involving white residents increased from 32% in the first two years of the pandemic to 44% in the first seven months of 2022. That equates to 24,400 deaths involving white residents in 2020-21 and about 6,000 deaths in the first seven months of 2022. White people make up about 35% of the state’s population.

Researcher­s point to several factors in the shift. During the first two years of the pandemic, large numbers of the workers deemed essential, who continued to report to job sites in person, were Latino, while white residents were more likely to be employed in occupation­s that allowed them to work from home, U.S. Census Bureau surveys show.

“They just got exposed more,” said Dr. George Rutherford, a professor of epidemiolo­gy and biostatist­ics at the University of California­San Francisco. “They’re doing essential jobs and had to leave the house and go to work.”

An imbalance in remote work remains, census data shows, but today the large majority of both Latino and

In California, the coronaviru­s killed about 31,400 people in 2020, almost 44,000 in 2021 and about 13,500 so far this year.

white workers in California are reporting to work in person.

Seciah Aquino, deputy director of the Latino Coalition for a Healthy California, said efforts to make sure that testing, treatment and vaccinatio­ns were available to underserve­d communitie­s of color also had an impact. And because Latino communitie­s were hit so hard during the pandemic, she said, many California Latinos are still wearing masks. “They are still making sure that they’re staying home if they’re sick,” she said. “They’re still abiding by those policies even if the greater narrative is changing.”

Age is also a key factor in the demographi­c shifts, Brewer said.

Through July, California­ns age 75 and older made up 53% of COVID deaths in 2022, up from 46% in 2020 and 2021. Only about 6% of the state’s residents are 75 and older. And white California­ns 75 and older outnumber Latinos in that age group about 3 to 1.

In the initial vaccinatio­n rollout, California prioritize­d seniors, first responders and other essential workers, and for several months in 2021 older residents were much more likely to be vaccinated than younger California­ns.

“Now the vaccinatio­n rates have caught up pretty much with everybody except for kids, people under 18,” Brewer said. “You’re seeing it go back to what we saw before, which is that age remains the most important risk factor for death.”

More than 86% of California­ns age 65 and older have completed their primary COVID shot series. But the protection afforded by vaccines wanes, and since many seniors got their shots early, enough time passed between their second shot and the omicron wave of early 2022 to leave them vulnerable. About onethird of California­ns 65 and older had not received a booster by early 2022, when the omicron wave peaked, and about one-quarter still haven’t received a booster.

Geographic shifts in COVID prevalence have occurred throughout the pandemic: Outbreaks hit one area while another is spared, and then another community serves as the epicenter a few months later.

Through early September, residents of the San FranciscoO­akland metro area accounted for 7.8% of the state’s deaths in 2022, up from 5.4% in 2020-21. The area is home to about 12% of the state’s residents. The Sacramento metro area has also accounted for a higher share of COVID deaths this year: 6% in 2022 versus 4.5% in 2020-21.

At the same time, Los Angeles-Long Beach-Anaheim metro residents made up 42% of COVID deaths in 2022, down slightly from 43% in 2020-21. The area is home to about 33% of the state’s residents. A similar dip happened in the nearby Riverside-San Bernardino metro area.

Again, age could be a factor in the geographic shifts. A higher proportion of residents in San Francisco and Sacramento are 75 and older than in Los Angeles and Riverside, census data show.

It’s unclear whether this shift will last. As the Los Angeles Times reported, COVID deaths grew at a faster pace in July in L.A. County than they did in the Bay Area.

The data also shows that vaccinatio­n remains one of the strongest deterrents to death from COVID. From January through July, unvaccinat­ed California­ns died at roughly five times the rate as vaccinated California­ns. But the gap has narrowed. From April through December 2021, California’s unvaccinat­ed residents died, on average, at around 10 times the rate of vaccinated California­ns.

Brewer said the gap lessened because the omicron variant was more likely than earlier variants to “break through” and cause infection in vaccinated California­ns. The omicron variant, while less deadly, also infected many more people than earlier variants.

This trend, too, may prove short-lived: The next generation of COVID booster shots are rolling out across the state.

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