“Roughly two and a half years into the pandemic, White House officials and health experts have reached a pivotal conclusion about Covid-19 vaccines: The current approach of offering booster shots every few months isn’t sustainable.
Though most vaccines take years to develop, the Covid shots now in use were created in record time—in a matter of months. For health authorities and a public desperate for tools to deal with the pandemic, their speedy arrival provided a huge lift, preventing hospitalizations and deaths while helping people to escape lockdowns and return to work, school and many other aspects of pre-Covid life.”
More than one million Americans were killed by Covid-19 in just over two years, the CDC reports. But the disease has hit some segments of the U.S. population far more than others. Photo illustration: Todd Johnson
Although intermittent fasting is most widely known as a weight-loss strategy, emerging research suggests that it could have benefits for brain health and cognition. But does it actually work, are there any drawbacks and how long would you have to fast to see benefits?
WSJ’s Daniela Hernandez breaks down what’s known and what’s not about the neuroscience of intermittent fasting.
Video Timeline: 0:00 Could intermittent fasting help our brains work better and longer? 0:31 How long would you have to fast to see any potential cognitive benefits? 1:04 How intermittent fasting could affect your ability to focus 2:27 Potential mood-related benefits of intermittent fasting 2:48 How intermittent fasting can affect brain health 4:03 Potential drawbacks of intermittent fasting
The Biden administration announced that Americans who have been fully vaccinated with a two-dose regimen against Covid-19 should receive a booster, citing the threat from the highly contagious Delta variant. WSJ breaks down what you need to know. Photo: Kamil Krzaczynski/Reuters
Across the country, states are shelling out incentives ranging from free beer to $1 million lotteries to encourage residents to get their Covid-19 shots. But is the effort to boost vaccination rates working? And is it worth the cost? Photo composite: Adam Falk/The Wall Street Journal
Technologies in development for delivering vaccines include Enesi’s dissolving implants, microneedle patches, electrical-pulse systems, nasal sprays and even pills.
Some firms are developing their own vaccines against Covid-19, while others are aiming to reformulate some of the dozens already in development or being rolled out world-wide. Some are sitting this pandemic out in the hope of being ready for the next one.
All are in the early to mid-stages of development and clinical testing, suggesting it might be months if not years before they come to market. Big pharmaceutical companies have so far shown limited interest.
As highly transmissible coronavirus variants sweep across the world, scientists are racing to understand why these new versions of the virus are spreading faster, and what this could mean for vaccine efforts. New research says the key may be the spike protein, which gives the coronavirus its unmistakable shape. Illustration: Nick Collingwood/WSJ