of Dec. 5, roughly four weeks after an exponential increase in cases was observed.
According to the researchers, peak hospital bed occupancy during the omicron wave was half of what was observed during the delta wave, and the distribution of patient ages was younger. Omicron currently accounts for 95 percent of sequenced cases in the Gauteng Province, where Tshwane is situated.
“The changing clinical presentation of SARS-CoV-2 infection is likely due to high levels of prior infection and vaccination coverage,” researchers wrote, adding that roughly two thirds of Tshwane residents have some form of immunity from COVID-19, either from vaccination or prior infection.
“The speed with which the Omicron driven fourth wave rose, peaked and then declined has been staggering. Peak in four weeks and precipitous decline in another two This Omicron wave is over in the City of Tshwane,” Fareed Abdullah, director of the South African Medical Research Council’s AIDS and tuberculosis research, wrote on Twitter.