Infection-acquired seroprevalence continued to increase in September: Canadian Blood Services.

Consistent with the continued prevalence of the Omicron variants (predominantly BA.4, BA.5 and BA.5 subvariants), infection-acquired seropositivity continues to increase among blood donors, up to 65.41% by the end of September, from 60% in the last week of August. These data come from Canadian Blood Services.