Two novel subvariants of MERS-CoV have been identified in the United States and Australia. The number of infections it causes is increasing rapidly in South Africa, where scientists warn of the possibility of a fifth wave of SARS infection.
In the United States, new Omicron sub-variants have been detected with the codes BA.4 and BA.5, the US magazine “Fortune” reported on Saturday. Bloomberg said Thursday that the sub-options seemed more contagious than the sub-Option BA.2 and the original BA.1 option.
A BA.4 infection was also detected in Australia in a person traveling from South Africa, news.com.au reported on Saturday. Sub variant BA.2 was identified in Melbourne wastewater in the south of the country.
“We expect these sub-options to cause disease recurrences and bypass some vaccines. The only explanation is that the increase in infection is occurring in South Africa, where more than 90% of the population appears to have obtained an adequate level of immune protection as it appears,” by Fortune Tulio de Oliveira, a virologist working at South African universities.
He warned on Saturday that the spread of the BA.4 and BA.5 sub variants in South Africa could lead to a fifth wave of Covid-19 infections. (PAP)
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