Spread of BA.4 and BA.5 COVID-19 subvariants reinforces need for vaccination and boosters
Available in Spanish The BA.4 and BA.5 Omicron subvariants are now the predominant COVID-19 variants in Oregon and across the United States. They have led to rising COVID-19-related hospitalizations, including ICU admissions. BA.4 and BA.5 are slightly more transmissible than the BA.2 Omicron subvariant, which was significantly more transmissible than the early COVID-19 variants. While […]