A version of this story appeared in the April 7 edition of CNN’s Coronavirus: Fact vs. Fiction newsletter. Sign up here to receive the need-to-know headlines every weekday.

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Tina Catron, a 44-year-old with no underlying health conditions, said: “You feel like you’re suffocating a little bit.” She experienced oxygen levels at a dangerously low 82% – far below the normal range of 95% to 100%.

A growing number of US colleges have said all students must be fully vaccinated before returning to campus, in a move likely to anger some state governors. At least 14 colleges have said vaccination will be required so far, according to a CNN tally, and that number is expected to grow.

The most common diagnosis was anxiety, found in 17% of those treated for Covid-19, followed by mood disorders, found in 14% of patients, CNN’s Ryan Prior writes.

The results help light the way for how health care systems ought to continue helping Covid-19 survivors, the scientists said.

“Our results indicate that brain diseases and psychiatric disorders are more common after Covid-19 than after flu or other respiratory infections, even when patients are matched for other risk factors,” said Maxime Taquet, an academic clinical fellow in psychiatry at the University of Oxford, and a co-author of the new report .

“We now need to see what happens beyond six months.”

While the neurological effects are more severe in hospitalized patients, they are still common in those who were only treated in an outpatient setting, according to the study.

The research is the largest of its kind and involved the electronic health records of more than 236,000 Covid-19 patients, mostly in the US.

The findings provide a sweeping view of the long-term burden the virus will have on those it struck.

Other, smaller studies have pointed to the same conclusion. Research in February followed 381 patients treated for Covid-19 at a hospital in Rome, Italy and found that 30% of them experienced post-traumatic stress disorder after recovery.

YOU ASKED. WE ANSWERED.

Q. How can I stop my glasses from fogging up when I wear a mask?

A. The US has put a pause on the use of the J&J vaccine while authorities work out if there is indeed a link. European and UK authorities think there is a possible link between the AstraZeneca vaccine and very rare blood clots in younger adults. Many European countries have limited the use of that shot to older adults, but it isn’t being used at all in the United States, where it isn’t yet approved.

These include the fact that older age groups are increasingly protected from the virus through vaccination, the circulation of the more transmissible B.1.1.7 variant and the fact that younger people are more mobile than their older counterparts.

“The B.1.1.7 variant spreads through the respiratory route, just like the wild-type, or common, strains, so please continue to wear masks, keep physical distancing, and avoid indoor gatherings with people who are not in your household,” Wen added.

“Try to hold off on gathering with people indoors until after you’re vaccinated. Once you’re vaccinated, you can see other fully vaccinated people indoors, but until then, please see people outdoors, with physical distancing.”

Send your questions here. Are you a health care worker fighting Covid-19? Message us on WhatsApp about the challenges you’re facing: +1 347-322-0415.

WHAT’S IMPORTANT TODAY

US will have enough vaccines for all Americans by end of next month

The US has come under pressure to share its vaccines. Secretary of State Tony Blinken said on Monday the country would do so when it was “more confident” about its own vaccine supply, and vowed it would not “trade shots in arms for political favors.” Blinken offered little detail on what that outreach would look like.

Biden announced Tuesday that every adult will qualify for vaccination by April 19. His original deadline was May 1.

The move comes as the US inoculation rollout continues to gather steam. Nearly 169 million Covid-19 vaccine doses have been administered in the country, according to data published Tuesday by the US Centers for Disease Control and Prevention (CDC).

Out of those doses, more than 150 million were reported administered within 75 days of Biden taking office, putting the White House on track to reach its goal of 200 million doses dispensed by day 100 of Biden’s presidency.

Speaking at the White House Tuesday, the President stressed caution and said the country must keep up its efforts to crush the pandemic.

“We have to ramp up a whole of government approach that rallies the whole country and puts us on a war footing to truly beat this virus,” he said.

A Japanese woman whose lungs were severely damaged by Covid-19 has received what doctors say is the world’s first lung transplant from living donors to a recovered coronavirus patient.

North Korea reportedly won’t participate in the Tokyo Olympic Games

North Korea has reportedly decided to drop out of the forthcoming Tokyo Olympics due to concerns that its athletes could contract coronavirus in Japan, which is battling a surge in cases. The Olympics have been seen as a diplomatic opportunity to engage with the reclusive country, which hasn’t missed a Games since the 1988 Olympics in Seoul.

The spokesperson said the trial had not raised any safety concerns, but would be paused while Britain’s Medicines and Healthcare products Regulatory Agency (MHRA) reviews rare cases of people who suffer blood clots while at the same time having low levels of blood platelets.

“Parents and children should continue to attend all scheduled visits and can contact the trial sites if they have any questions,” the spokesperson added.

Last week the MHRA said at least 30 people in Britain had experienced rare types of blood clots after receiving the shot, out of a total of 15.8 million people who were given at least one dose by March 21.

The regulator warned it was too early to know whether the vaccine itself triggered the clots.

After false starts, the Australia-New Zealand bubble starts this month

New Zealand Prime Minister Jacinda Ardern announced Monday her country would allow Australians to travel to the country quarantine-free from April 18 at 11:59 pm, in an experiment that offers a glimpse into what future foreign holidays may look like in many parts of the world.

The country saw at least 4,195 new Covid-19 deaths over the past 24 hours – the first time the nation has seen an increase in deaths above the 4,000 mark.

Brazil is facing a brutal and out-of-control wave of the virus, as a Covid-19 variant known as P.1. continues to rip through the country. There are signs of collapse at every level of the health care system as staff struggle to care for patients while dealing with a critical lack of space and supplies.

Brazilian President Jair Bolsonaro spoke to Russian leader Vladimir Putin Tuesday and expressed interest in acquiring Russia’s Sputnik V Covid-19 vaccine, adding that first they need to “solve some obstacles” to get the shot approved for use.

Medical staff transport a patient on a stretcher at a field hospital in Santo Andre, Brazil on March 11.

ON OUR RADAR

TODAY’S TOP TIPS

There are some things you can do to minimize your risk even more. Whether you’re by yourself or with fully vaccinated people, having your own area to relax in will help, says Dr. Ada Stewart, the president of the American Academy of Family Physicians. Always check local regulations, as some beaches may require reservations or have limited capacity, the CDC says, and plan to arrive “swim ready” by showering and changing at home first. Here are some more tips.

Ask about the property’s new cleaning and disinfecting procedures and whether all staff members are wearing masks.

Additionally, inquire about ventilation quality – opening windows and doors, using window fans, having properly operating ventilation systems and HEPA (high-efficiency particulate air) filtration systems that enhance air cleaning are a few good signs, according to the CDC.

As increasing numbers of people are vaccinated, you may be wondering whether now is finally the time to enjoy a meal that isn’t homemade or takeout.

TODAY’S PODCAST

“Chinatown was seen as the source of where these diseases emerged. Chinatown was a neglected neighborhood.”

More than a century ago, the people of San Francisco’s Chinatown came together in the face of racism and built their own hospital. Now, Covid-19 has brought the community together again. In today’s episode, CNN’s Harmeet Kaur tells us the origins of Chinese Hospital and how its legacy carries on today. Listen now.