Brits Urged to Stick to 20-Second Handwashing Rule as New Covid Variants Spread Friday, October 3, 2025 covid variants handwashing hygiene uk health covid19 prevention transmission publichealth As the Covid-19 variants XFG and NB.1.8.1 become the most widespread strains in the UK, health authorities are reinforcing the importance of proper handwashing. Officials are reminding the public to adhere to the 20-second …