Public health chiefs monitoring new Delta strain ‘of extreme concern’ – symptoms to spot

According to the paper, on July 11, 2021, a 41-year-old man from a small village in northern Lombardy began experiencing cough fever and malaise.

Researchers explained: “He fully recovered without the need for hospital admission; whole-genome sequencing confirmed B.1.617.2 that harboured E484K.

“His mother experienced fatigue, headache, myalgia and dispel beginning July 17 and tested positive on July 24.

“E484K mutation represents a critical evolutionary event that leads to immune escape, although its consequences on viral fitness are unclear.”