Are sleep trackers accurate? Here's what researchers currently know

Sleep trackers use an algorithm to estimate how much time you spent asleep based on body movements. Andrey_Popov/ Shutterstock An estimated one in three people report regular sleep complaints. So it’s hardly surprising people are more concerned than ever about getting enough sleep. This blossoming interest has seen an explosionContinue Reading

Why resistance is common in antibiotics, but rare in vaccines

Antibiotic resistance is a worldwide problem to the extent that there is a grave risk that common infections will soon become untreatable. Meanwhile, vaccines developed nearly a century ago still protect us from deadly diseases. What might explain this difference? Bacteria have evolved resistance to every antibiotic ever developed. SometimesContinue Reading

Virus cell in the body being attacked by tiny antibodies.

Millions of people across the world have been infected with SARS-CoV-2, the virus that causes COVID-19. Countries are also now embarking on massive vaccination campaigns to control the virus and protect their most vulnerable citizens. One of the biggest questions remaining is whether vaccination and/or prior infection with SARS-CoV-2 offersContinue Reading

Why we need to test COVID-19 tests

SwitchedDesign/Shutterstock During the first peak of the coronavirus pandemic, it became apparent that the processing of the standard COVID-19 test using nasal swab samples, while considered a gold standard, was slow, taking over 24 hours to give results in most cases. As demand for quicker test results increased with suppliesContinue Reading

Pie chart showing the age breakdown of COVID-19 hospital admissions in England in December 2020; 52% were people over 75.

England has gone into a tough lockdown to halt spiralling COVID-19 hospitalisations and relieve pressure on its health system. The prime minister, Boris Johnson, has said the new lockdown will last at least seven weeks, but it’s safe to assume that, with many hospitals near capacity, it will stay inContinue Reading