New COVID-19 variant detected in South Africa sparks travel bans and an anxious wait for data

Johannesburg — A potentially dangerous new strain of the coronavirus is alarming scientists around the world and prompting governments to ban travelers from southern African nations. The variant was first detected in South Africa, where scientists were quick to flag it to the global health community.

As CBS News correspondent Debora Patta reports, there's serious concern among experts that the new strain could set back the fight against the pandemic. 

South African officials say the variant, which has more mutations than previously detected strains that have emerged around the world, marks a huge "jump in the evolution" of the virus since the global health crisis began two years ago.