Now, officials in some major cities are watching nervously as cases begin to rise once again. On May 3,was elevated from the"green" low COVID transmission risk category to the medium"yellow" risk level as daily infections increased thanks to the continued spread of the highly contagious Omicron variant. Such changes in the virus' trajectory could ultimately bring about the return of particular public health measures.
But on a larger scale, some experts are already warning that there's ample evidence that another wave of COVID cases may be about to spread worldwide. According to a new South African study released on April 29, which has not yet been peer-reviewed, the newwere found to be capable of infecting vaccinated patients who previously contracted the disease, showing a threefold decrease in neutralizing antibody production against the latest versions of the virus.
"The low absolute neutralization levels for BA.4 and BA.5, particularly in the unvaccinated group, are unlikely to protect well against symptomatic infection," the researchers concluded."This may indicate that, based on neutralization escape, BA.4 and BA.5 have potential to result in a new infection wave.
."If you were vaccinated and had Omicron, your protection is decent, at least against severe disease,", the study's lead author and a professor at the Africa Health Research Institute in South Africa, toldSigal also specified that while there will likely be a rise in case counts, he doesn't expect it to be as significant a wave as previous surges of the virus, thanks to the high number of prior infections in the global population.
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