SIR – Regardless of the rule changes tomorrow, I’ll continue to wear a mask. The Government’s anti-mask, anti-social-distancing agenda is, in reality, a thinly-veiled policy of herd immunity. It clearly wants to let Covid rip. It is now down to the people of Britain to deny the Government its herd-immunity wish. We should mask up, practise social distancing and generally be cautious to help save human lives from this vicious disease. Sebastian Monblat Sutton, Surrey SIR – The current Covid infection rate is around 40,000-50,000 per day and still increasing (though the figure is probably higher due to many having no symptoms and therefore not contributing to the daily figures).