New coronavirus subvariants dominating new COVID-19 infections
vaccination is still expected to provide substantial protection against severe
disease, and vaccine makers are working on updated shots that might elicit a
stronger immune response against the variants.
BA.4 and BA.5 are the fastest
spreading variants reported to date, and they are expected to dominate COVID-19
transmission in the United States, United Kingdom and the rest of Europe within
the next few weeks, according to the European Centre for Disease Prevention and