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A new study in two states that compares coronavirus protection from a prior infection and vaccination concludes that getting the shots is still the safest way to prevent COVID-19. 

The study examined infections in New York and California last summer and fall and found people who were both vaccinated and had survived a prior bout of COVID-19 had the most protection.

But unvaccinated people with a past infection were a close second. By fall, when the more contagious delta variant had taken over but boosters weren’t yet widespread, that group had a lower case rate than vaccinated people who had no past infection. 

The Centers for Disease Control and Prevention, which released the study Wednesday, noted several caveats to the research. And some outside experts were cautious of the findings and wary of how they might be interpreted. 

“The bottom-line message is that from symptomatic COVID infection you do generate some immunity,” said immunologist E. John Wherry of the University of Pennsylvania. “But it’s still much safer to get your immunity from vaccination than from infection.”

Vaccination has long been urged even after a case of COVID-19 because both kinds of protection eventually wane — and there are too many unknowns to rely only on a past infection, especially a long-ago one, added immunologist Ali Ellebedy at Washington University in St. Louis. 

“There are so many variables you cannot control that you just cannot use it as a way to say, ‘Oh, I’m infected, then I am protected,’ ” Ellebedy said.

Other studies

The research does fall in line with a small cluster of studies that found unvaccinated people with a previous infection had lower risks of COVID-19 diagnosis or illness than vaccinated people who were never before infected. 

The new study’s findings do make sense, said Christine Petersen, a University of Iowa epidemiologist. She said a vaccine developed against an earlier form of the coronavirus is likely to become less and less effective against newer, mutated versions. 

However, experts said, there are a number of possible other factors at play, including whether the vaccine’s effectiveness simply faded over time in many people and to what extent mask wearing and other behaviors played a part in what happened. 

Another thing to consider: The “staunchly unvaccinated” aren’t likely to get tested and the study only included lab-confirmed cases, Wherry said. 

“It may be that we’re not picking up as many reinfections in the unvaccinated group,” he said. 

CDC officials noted other limitations. The study was done before the omicron variant took over and before many Americans received booster doses, which have been shown to dramatically amplify protection by raising levels of virus-fighting antibodies. The analysis also did not include information on the severity of past infections or address the risk of severe illness or death from COVID-19. 

‘Safest strategy’

The study authors concluded vaccination “remains the safest strategy” to prevent infections and “all eligible persons should be up to date with COVID-19 vaccination.” 

The researchers looked at infections in California and New York, which together account for about 18% of the U.S. population. They also looked at COVID-19 hospitalizations in California. 

Overall, about 70% of the adults in each state were vaccinated; another 5% were vaccinated and had a previous infection. A little less than 20% weren’t vaccinated; and roughly 5% were unvaccinated but had a past infection. 

The researchers looked at COVID-19 cases from the end of last May until mid-November and calculated how often new infections happened in each group. As time went on, vaccine-only protection looked less and less impressive. 

By early October, compared with unvaccinated people who didn’t have a prior infection, case rates were: 

— Sixfold lower in California and 4.5-fold lower in New York in those who were vaccinated but not previously infected. 

— 29-fold lower in California and 15-fold lower in New York in those who had been infected but never vaccinated. 

— 32.5-fold lower in California and 20-fold lower in New York in those who had been infected and vaccinated. 

But the difference in the rates between those last two groups was not statistically significant, the researchers found. 

Hospitalization data, only from California, followed a similar pattern. 
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It’s been a year since U.S. President Joe Biden took the oath of office on the steps of the U.S. Capitol. He inherited a global coronavirus pandemic that, from the campaign trail, he promised to end. VOA’s Arash Arabasadi reports on his handling of the pandemic.

Producer: Arash Arabasadi.
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U.S. news outlets said Wednesday that the Biden administration will distribute 400 million high-quality face masks free of charge to the American people beginning next week.

A White House official, speaking anonymously, said the N95 masks will be shipped to thousands of local pharmacies and community health centers across the United States beginning later this week, with three masks available per adult. The program will be fully operational by early February.

The N95 masks are part of the 750 million masks housed in the federal government’s Strategic National Stockpile, which stores critical medicines and medical supplies for use during a public health emergency. The U.S. Centers for Disease Control and Prevention recently advised that N95 masks, which are designed to fit tightly on a person’s face, “offer the highest level of protection” against COVID-19, compared to other face masks.

The officials say the distribution of the N95 masks will be the largest deployment of personal protective equipment in U.S. history.

Announcement of the free N95 face masks comes on the same day as the official debut of the federal government’s new website that allows Americans to request free rapid coronavirus test kits. Millions of households began placing orders for the test kits Tuesday during a soft launch of Covidtests.gov. The website allows each household to order a maximum of four tests after clicking on a link that connects to a U.S. Postal Service form.

Some occupants of apartments and other multi-unit dwellings, however, complained on social media that the website’s address verification tool was enforcing the four-per-person household, only allowing one family per building to request the tests.

The two programs are part of an aggressive new effort by the Biden administration to combat a surge of new COVID-19 infections largely driven by the highly contagious omicron variant of the coronavirus.

A high-ranking official with the World Health Organization says the world could turn the corner on the COVID-19 pandemic this year through a more equitable distribution of vaccines and treatments.

Dr. Michael Ryan, the director of WHO’s health emergencies program, told the World Economic Forum Tuesday that COVID-19 may never be eradicated, but stressed the current public health emergency could finally come to an end if more vaccines finally reach the world’s poorest countries.

The U.N. health agency has repeatedly criticized the world’s richest countries for building up huge stockpiles of COVID-19 vaccines and using them to administer booster shots to its citizens, while poorer nations have barely received even a first dose of a vaccine.

More than 334,469,000 people around the globe have been sickened since COVID-19 was first detected in Wuhan, China in late 2019, according to figures compiled by the Johns Hopkins Coronavirus Resource Center. The center reports more than 5.5. million deaths globally.

Germany announced Wednesday that it had recorded 112,323 new COVID-19 cases, the country’s highest-ever daily figure and the first time it had broken the 100,000 mark for a single day. The Robert Koch Institute, Germany’s disease control and prevention agency, said 70 percent of the new cases were driven by the highly-contagious omicron variant. The surge of new infections has prompted the government of new Chancellor Olaf Scholz to consider imposing mandatory vaccinations.

Tokyo and 12 other Japanese prefectures will be placed under new COVID-19 restrictions effective Friday as Japan struggles with an omicron-driven surge. Prime Minister Fumio Kishida told reporters Wednesday in the Japanese capital the new decree will allow local governors to limit the operating hours of bars and restaurants and ban the sale of alcohol. The restrictions will remain in effect until February 13.

Some information for this report came from the Associated Press, Reuters, Agence France-Presse.
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The U.S. government quietly conducted a soft launch Tuesday of its website where Americans can request free rapid coronavirus tests — a day ahead of the scheduled rollout.  

Covidtests.gov quickly became the most accessed federal government website as millions of households began placing orders for test kits. 

“COVIDtests.gov is up and running to help prepare for the full launch tomorrow. We have tests for every residential address in the U.S. Please check back tomorrow if you run into any unexpected issues,” said a notice at the top of the government website.  

This reporter mid-Tuesday was able to complete an order within about a minute after clicking on the link that connects to a U.S. Postal Service form.  

Some occupants of apartments and other multi-unit dwellings, however, complained on social media that the website’s address verification tool was enforcing the four-per-person household, only allowing one family per building to request the tests.

A member of Congress from the state of New York, Carolyn Maloney, tweeted advice on how apartment residents might avoid the glitch.

“Every website launch, in our view, comes with risk,” White House press secretary Jen Psaki told reporters during Tuesday’s White House briefing. “We can’t guarantee there won’t be a bug or two, but the best tech teams across the administration and the Postal Service are working hard to make this a success.”  

An administration official last week promised reporters, “we’re ready for this,” explaining that four individual rapid antigen tests would be shipped in seven to 12 days via the Postal Service after a completed online order.  

“The 650,000 women and men of the United States Postal Service are ready to deliver and proud to play a critical role in supporting the health needs of the American public,” Postmaster General Louis DeJoy said in a statement last week. “We have been working closely with the Administration and are well prepared to accept and deliver test kits on the first day the program launches.” 

President Joe Biden last week announced the government will purchase another 500 million at-home tests for the public, in addition to the order made last month for half a billion tests.  

The Biden administration’s plan is a classic case of big government seeming to be “needed” because it is difficult for private forces to address the problem, according to Jeffrey Miron, director of economic studies at the Cato Institute and a Harvard University economist. 

Americans have the option to purchase tests at pharmacies and other stores. New federal rules went into effect Saturday requiring private medical insurance companies to cover the cost of those at-home tests, but insurers say it could take weeks to sort out the reimbursement procedures, adding another headache to the process.    

“This federal intervention would never have been necessary had the private sector been free to develop, test, and sell test kits without interference from the Food and Drug Administration or Centers for Disease Control,” Miron told VOA. “Other countries had rapid tests widely available many months ago; so, the technology was clearly available.”  

Given the existing rules and regulations about private production and sale of test kits, however, “federal distribution is perhaps a useful step that will reduce the delays and bottlenecks that many people are experiencing in purchasing kits from private suppliers,” Miron said.  
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