The surge in new coronavirus cases that has alarmed health officials and put renewed strain on hospitals appears to be driven at least in part by increases in younger Californians falling sick.
As of Wednesday, 56% of people diagnosed with COVID-19 were 18 to 49 years old, though they account for only 43.5% of the state’s population. That figure has risen consistently throughout the outbreak but surged sharply in recent weeks.
Meanwhile, people older than 65, who used to make up nearly a quarter of those testing positive for COVID-19, now account for fewer than 15% of positive coronavirus tests, roughly in line with their proportion of the population.
The changes may be due in part to expanded testing. Early in the outbreak, it was nearly impossible to get a test for the coronavirus unless one was sick enough to be hospitalized. Because young people are less likely to get severely ill with COVID-19, they may not have been captured in testing numbers.
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Newport Beach police enforce closures along the Wedge in Newport Beach, a popular surf spot. (Irfan Khan/Los Angeles Times)
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Spectators along the Wedge in Newport Beach, a surf spot, on July 4. (Irfan Khan/Los Angeles Times)
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A bicyclist rides along Highland Avenue with the pier closed to beachgoers on July 3 in Manhattan Beach. (Gary Coronado/Los Angeles Times)
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Peter Gratzinger of Pacific Palisades heads to the water at Santa Monica State Beach, which opened to the public at 5 a.m. July 6. (Myung J. Chun/Los Angeles Times)
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A bicyclist with her child rides along the closed bike path on July 3 in Manhattan Beach. (Gary Coronado/Los Angeles Times)
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A police officer and a lifeguard boat comb the shoreline in Venice Beach on July 5. Even though the beach was closed over the weekend a few still made their way to the shoreline. (Genaro Molina/Los Angeles Times)
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No-parking signs from the July 4 weekend still block spots on Ocean Avenue in Santa Monica on Monday. (Myung J. Chun/Los Angeles Times)
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Dusk sets in over the the Santa Monica Pier on Friday. (Gina Ferazzi/Los Angeles Times)
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Southern California residents watch the fireworks during the Drive-Up 4th of July Spectacular at the Los Alamitos Joint Forces Training Base on Saturday in Los Alamitos. (Gina Ferazzi/Los Angeles Times)
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Bella Nousiainen, left, with daughter, Helmi Nousiainen, of Los Angeles, at the Santa Monica Pier, which reopens after being closed to guests for months because of the coronavirus. (Gary Coronado/Los Angeles Times)
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Dr. Jamie Taylor checks the ventilators at the refashioned St. Vincent Hospital. (Wally Skalij/Los Angeles Times)
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Shoppers and mannequins wear protective masks in the Los Angeles downtown garment district on Thursday. (Luis Sinco/Los Angeles Times)
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Patrons wear face coverings at Grand Central Market in downtown Los Angeles on Thursday. A recent surge in COVID-19 cases in California has pushed the state’s total past 200,000 with more than 5,800 deaths. (Kent Nishimura/Los Angeles Times)
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LAPD officers E. Rosales, left, and D. Castro, patrol the Metro Red Line at the Hollywood/Highland Metro Station Thursday. (Allen J. Schaben/Los Angeles Times)
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Visitors wear protective masks while walking through historic Olvera Street in downtown Los Angeles on Thursday. (Luis Sinco/Los Angeles Times)
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People wait in line to have a COVID-19 screening administered by the Community Organized Relief Effort at the Los Angeles City Mayor’s test site at Dodger Stadium on Thursday. (Gary Coronado/Los Angeles Times)
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A woman adjusts a protective mask while walkiing along Atlantic Avenue in Long Beach. (Luis Sinco/Los Angeles Ti mes)
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Cameron Johnson,18, left, headed to UC Berkeley in the fall and Simona Krasnegor,17, headed to UCLA in the fall, watched the sun set while sitting next to the Manhattan Beach Pier, following their drive-through graduation from Mira Costa High School in Manhattan Beach. (Jay L. Clendenin/Los Angeles Times)
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Jair Guido, 36, a veterinarian visiting from Durango, Mexico, right, wearing a sombrero with an American flag draped over his shoulders, walks with other pedestrians along Hollywood Boulevard in Hollywood. Guido said that he wore this outfit to show people that he is proud to be a Mexican and that he loves America. Gov. Gavin Newsom on Thursday ordered all Californians to wear face coverings while in public. (Mel Melcon / Los Angeles Times)
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A mask-wearing skateboarder and her dog make their way along the boardwalk in Venice Beach. Californians must wear face masks in public under a coronavirus order issued by Gov. Gavin Newsom. (Mel Melcon / Los Angeles Times)
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Pedestrians, some with face coverings, some without, walk past musicians Brent Kendell, background left, and Sam Jones, background right, as they perform at the intersection of Hollywood Boulevard and Highland Avenue in Hollywood. (Mel Melcon / Los Angeles Times)
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People wear masks while walking along the boardwalk in Venice Beach. Californians must wear face masks in public under a coronavirus order issued by Gov. Gavin Newsom. (Mel Melcon / Los Angeles Times)
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Pedestrians cross the intersection of Hollywood Boulevard and Highland Avenue in Hollywood. Gov. Gavin Newsom on Thursday ordered all Californians to wear face coverings while in public, following growing concerns that an increase in coronavirus cases has been caused by residents failing to voluntarily take that precaution. (Mel Melcon / Los Angeles Times)
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Sophia Strauss, left, and Sarah Hoffmeister celebrate after their drive-through graduation from Mira Costa High School in Manhattan Beach. (Jay L. Clendenin / Los Angeles Times)
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New West Charter School vice principal Mark Herrera shouts at graduate Joe Reid to come and receive his diploma during a drive-up graduation ceremony for the Class of 2020 at the charter school in Los Angeles. (Genaro Molina/Los Angeles Times)
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A worker directs drivers at a drive-up testing site for COVID-19 outside of Jackie Robinson Stadium at UCLA.
(Genaro Molina/Los Angeles Times)
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Destiny VanSciner is tested for COVID-19 with an oral swab by family nurse practitioner Anniesatu Newland at a walk-in site at St. John’s Well Child and Family Center in South Los Angeles. (Al Seib / Los Angeles Times)
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Melissa Gomes fixes the tassel on the mortarboard of Sarah Anggraini as the new graduate gets ready for a photo at Chaffey College, which held a drive-through graduation, in Rancho Cucamonga. (Irfan Khan / Los Angeles Times)
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Maricela Moreno, manager at El Tarasco in Marina del Rey, disinfects cash at the restaurant. (Myung J. Chun / Los Angeles Times)
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Mildred “Millie†Stratton waves to a caravan of cars led by Alhambra police officers and firefighters. The parade past her home celebrated Stratton’s 102nd birthday. (Allen J. Schaben / Los Angeles Times)
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Eric Larkin hands an order to Brittany Wright as she fastens her face covering outside the Last Bookstore in downtown Los Angeles. (Dania Maxwell / Los Angeles Times)
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A jogger passes Evergreen Cemetery in Los Angeles as local stay-at-home orders are increasingly relaxed months into the coronavirus outbreak. (Robert Gauthier / Los Angeles Times)
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Hikers and bikers traverse the Santa Fe Dam trail as county parks officially reopen to the public. (Robert Gauthier / Los Angeles Times)
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A woman, masked against COVID-19, walks past a building that features the image of Britney Spears at a shopping center in the Fairfax District of Los Angeles. (Genaro Molina / Los Angeles Times)
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Manon Guijarro, a new graduate of Pierce College, has her photo taken by friend Paige Johnson at Chris Burden’s outdoor work “Urban Light†at the Los Angeles County Museum of Art in Los Angeles. (Genaro Molina / Los Angeles Times)
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Mary Perez, a salesperson at High Class Jewels on Broadway in downtown Los Angeles, helps a customer as he tries on a gold rope chain inside the recently reopened store. (Mel Melcon/Los Angeles Times)
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Professional dog walker Lindsay Rojas takes golden retrievers Gomez, left, and Nikki for a stroll along Le Bourget Avenue in Culver City. (Mel Melcon / Los Angeles Times)
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The Air Force Thunderbirds precision flying team banks over downtown Los Angeles in formation to salute healthcare workers and first responders on May 15. (Brian van der Brug / Los Angeles Times)
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Maria Morales, center, a member of the USC class of 2020, participates in virtual graduation via Zoom with her brother Manny Morales, left, mom Pilar Morales and stepdad Victor Ramos from her home in Orange. (Brian van der Brug / Los Angeles Times)
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On a recent day, there’s not a face mask in sight as a roller skater and others share the reopened walking path on the Strand in Manhattan Beach. (Jay L. Clendenin / Los Angeles Times)
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Crew members of a Hainan Airlines flight walk through the Tom Bradley International Terminal at Los Angeles International Airport. (Al Seib/Los Angeles Times)
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A woman wearing a protective mask walks past a shuttered business in Long Beach. (Luis Sinco/Los Angeles Times)
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Thousands of rental cars are stored at Dodger Stadium as the coronavirus crisis has caused rentals to nosedive. (Robert Gauthier/Los Angeles Times)
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Some beachgoers actively use the beach while others relax on the sand, despite Gov. Gavin Newsom’s active-use-only order, in Huntington Beach. (Allen J. Schaben/Los Angeles Times)
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Traveling nurse Gail Cunningham waves thanks outside the emergency room entrance to Riverside University Health System in Moreno Valley as residents pay tribute to her and other medical personnel with a drive-by rally. (Gina Ferazzi/Los Angeles Times)
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A scene from “Knives Out,†with actor Don Johnson, seen at the Mission Tiki Drive-in Theatre in Montclair. Opened with one screen in 1956, the Mission Tiki expanded to four screens in 1975 and began renovation in 2006, updating to FM transmitters and digital projectors. (Jay L. Clendenin/Los Angeles Times)
Officials, however, warn that although testing criteria may be a factor, they do not fully explain the trends. The virus appears to simply be spreading more in younger age groups now, they say.
The increasingly young demographics of coronavirus infections are being seen in California and beyond.
In L.A. County, 40% of coronavirus cases are occurring among those 18 to 40 years old.
That matches the experience in Japan, where a study published by the U.S. Centers for Disease Control and Prevention found that the people probably spreading the coronavirus in more than 60 clusters were mostly young adults, ages 20 to 39. Most did not show symptoms when they transmitted the virus, and almost none had a cough.
Transmission probably happened at such places as restaurants, bars, workplaces, healthcare facilities, gyms and music events. Many clusters were associated with heavy breathing in proximity to others, such as people singing at karaoke parties, cheering at a concert, chatting in a bar or exercising at a gym.
An increasingly alarmed Gov. Gavin Newsom warned Californians on Thursday about the growing spread of the coronavirus as the state again reported increases in hospitalizations.
The governor’s news conference marks the third time this week that he has urged Californians to take more precautions as he disclosed troubling new highs.
“I cannot impress upon people more the importance at this critical juncture, when we are experiencing an increase in cases that we have not experienced in the past, to take seriously this moment,†Newsom said. “If we do, we can mitigate and we can bend, and we ultimately can rebound and become more resilient still in the future.â€
Newsom said Thursday that the number of patients hospitalized with COVID-19 had jumped 32% in the last two weeks, to 4,240. That is double the two-week increase of 16% he reported Monday.
The governor has pleaded with residents to wear masks and maintain a physical distance of six feet from one another. He advised those older than 65 and those with chronic medical conditions to remain at home.
But beyond telling Californians to heed the state’s mask requirement, the governor has not reinstated any of the restrictions he began easing in early May or demanded that counties experiencing surges close businesses again.
Fifteen counties in California have reported an elevated transmission of the disease, increased hospitalizations or a limited hospital capacity that exceed the state’s guidelines: Contra Costa, Fresno, Imperial, Kern, Kings, Los Angeles, Riverside, Sacramento, San Bernardino, San Joaquin, Santa Barbara, Santa Clara, Stanislaus, Tulare and Ventura.
Newsom said Thursday that he would consider “toggling back†and reinstating restrictions if healthcare needs began to exceed capacity.
“When our system cannot absorb, when there’s a capacity consideration or limitation, that’s when we obviously have alarm bells,†he said.
The state reported more than 5,000 new cases Thursday, according to The Times’ coronavirus tracker — pushing its cumulative total past 200,000. More than 5,800 Californians have died of COVID-19, including almost 100 on Thursday.
“While you may be done with COVID, COVID is not done with us,†Garcetti said.
Cumulative case counts are only part of the equation. Health officials have said other metrics — such as the number of patients who require hospitalization and the positivity rate — help paint a more complete picture of the coronavirus outbreak.
But there are warning signs there, too.
There have been nearly 90,000 confirmed coronavirus infections and more than 3,200 deaths in L.A. County.
Riverside County has seen an average daily increase of 85 patients; San Bernardino County, 70; Ventura County, 33; and Orange County, 32, according to a Times analysis.
And L.A. County has seen its daily number of hospitalizations tick up recently — something Public Health Director Barbara Ferrer called “extraordinarily worrisome.â€
Orange County also reported 26 COVID-19 deaths Wednesday — its most in a single day. Officials noted that not all of those people died on that particular day. The recently reported fatalities date as far back as May 9, according to the Orange County Health Care Agency.
