Sir, – Unless 7th-century Ireland was covered in mosquito-infested jungle, replete with infected monkeys, it wasn't yellow fever that finished off St Fechin ("An Irishman's Diary about Termonfeckin", February 12th). Frank McNally will have to continue his Fechin research. – Yours, etc,
Dr JOHN DOHERTY,
Gaoth Dobhair,
Co Dhún na nGall.