Covid-19 could cause lower intelligence in those who have had it, says study

Scientists say Covid-19 could have a negative effect on the intelligence of people admitted to hospital with the virus, according to a new study. Researchers found that people who had been hospitalised with Covid were more likely to get a lower score on the Great British Intelligence Test. The drop-off was even greater among those who had recovered from the virus after being put on a ventilator, according to the study, published in The Lancet, that analysed the results of 81,337 people who took the test between January and December 2020.