South African Doctors See Signs Omicron Is Milder Than Delta

Melva Mlambo, right, and Puseletso Lesofi, both medical scientists prepare to sequence COVID-19 omicron samples at the Ndlovu Research Center in Elandsdoorn, South Africa, on Dec. 8, 2021. Jerome Delay/AP Photo, File

JOHANNESBURG—As the omicron variant sweeps through South Africa, Dr. Unben Pillay is seeing dozens of sick patients a day. Yet he hasn’t had to send anyone to the hospital.

That’s one of the reasons why he, along with other doctors and medical experts, suspect that the omicron version really is causing milder COVID-19 than delta, even if it seems to be spreading faster.