Natural immunity in Portugal


Rise of natural acquired immunity.

Risk of BA.5 Infection among Persons Exposed to Previous SARS-CoV-2 Variants.……

Omicron subvariants, BA.1 and BA.2, displaced by BA.5 in many countries. Greater transmissibility. Partial evasion of BA.1- and BA.2-induced immunity.

Portugal, one of the first countries affected by a BA.5 predominance.