Logo

Logo

Coronavirus

Global spike in Covid cases may lead to dangerous variants

Covid infections have surged to a mean of 540,000 per day, and a mean of just about 70,000 weekly deaths, the WHO stated this week. The faster rate of vaccination can reduce the probability of the emergence of a resistant strain.

Covid virus may reach various layers of human retina: Study

"The eye has shown abnormalities associated with Covid-19 infection, and retinal changes were presumed to be associated with secondary microvascular and immunological changes," said Carlla A. Araujo-Silva, from INBEB in Rio de Janeiro.