Hypophrenia
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'Delta wave likely factor in rapid spread of BA.2.75'
India's Delta wave could be a factor in the rapid spread of Omicron subvariant BA.2.75, say experts, after a China study hinted the same. The study said when a small serum sample from those with Delta breakthrough infection was tested against BA.2.75, the latter seemed to be more immune evasive than BA.4/BA.5.