What causes long Covid?

A man wearing a protective face mask walks past a mural on a street, amidst the spread of the coronavirus disease (Covid-19), in Mumbai, India, January 10, 2022. Photo: Reuters
Coronavirus chronicle

Nerve damage may explain some cases of long Covid: US study

A traveler arrives to enter into a Covid-19 testing center at the Incheon International Airport In Incheon, South Korea, Wednesday, Dec. 1, 2021. South Korea's daily jump in coronavirus infections exceeded 5,000 for the first time since the start of the pandemic, as a delta-driven surge also pushed hospitalizations and deaths to record highs. Photo: UNB/AP
Coronavirus chronicle

How does coronavirus reach brain? What causes long Covid? Scientists find answer