Last week, authorities in South Africa said they had noted an uptick in COVID-19 cases attributable to the BA.4 mutant of omicron, although they said it was too early to tell if that would result in a significant new wave of disease. Although the BA.4 version of COVID-19's omicron variant appears more infectious than omicron, WHO said there was no evidence yet that it was leading to substantially higher rates of hospitalization or death. 
Sabata yatha, adindo a ku South Africa ati apeza kuti pali kukwera kwa chiwerengero cha anthu odwala mtundu wina wa COVID-19 wotchedwa BA.4 omicron ngakhale kuti pakali pano sangathe kunena ngati iyi ingakhale nyengo ina ya mliriwu. Ngakhale kuti BA.4 omicron COVID-19 ndiyosiyana komanso yofala kwambiri kuposa omicron, WHO yati palibe umboni woti mthendayi ndi yomwe ikuchititsa anthu ambiri kugonekedwa kuchipatala kapena kumwalira.