The BA.4 and BA.5 COVID-19 subvariants are the reason for the current global spike of cases. The main characteristic of these subvariants, is that they can spread faster than other circulating variant...
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The BA.4 and BA.5 COVID-19 subvariants are the reason for the current global spike of cases. The main characteristic of these subvariants, is that they can spread faster than other circulating variant...