The mRNA-1283 vaccine showed a higher immune response—including in seniors—than its currently licensed vaccine, called mRNA-1273.222. Response was higher against Omicron BA.4/BA.5 as well as the original SARS-CoV-2 virus.
New guidelines suggest certain high-risk groups could benefit from having another dose of a COVID-19 vaccine this spring — and more frequent shots in general — while the broader population could be entering once-a-year territory, much like an annual flu shot.
Medical experts told CBC News that falling behind on the latest shots can come with health risks, particularly for individuals who are older or immunocompromised.
The researchers discovered that 10.6% of exposed household contacts developed symptomatic illness within 14 days of exposure to asymptomatic test-positive children, a rate higher than expected.
:max_bytes(150000):strip_icc()/VWH-Annual-COVID-shot-plan-1-068de2012c8f47819e4cb74c76eb9143.jpg)
