Moderna Says Its Revised Covid Vaccine Works Better Against Omicron
A significantly stronger immune response against Omicron is seen, but it remains unclear how an updated vaccine will fare against future versions of the virus.
A significantly stronger immune response against Omicron is seen, but it remains unclear how an updated vaccine will fare against future versions of the virus.
The findings indicate that the updated vaccine produced a significantly stronger immune response against Omicron, but it is unclear how it will fare against future versions of the virus.
The spread of the subvariants adds more uncertainty to the trajectory of the pandemic in the United States.
Clinical trials found the vaccine to work well, but the company has long struggled with manufacturing.
As the number of cases outside Africa approaches 800, governments are scrambling for a limited pool of vaccines and treatments with unclear effectiveness.
Health experts, including the Centers for Disease Control and Prevention, recommend that pregnant women get vaccinated against the coronavirus as soon as possible, to protect both maternal and fetal health.
Last year, people 65 and older died from Covid at lower rates than in previous waves. But with Omicron and waning immunity, death rates rose again.
The spread of the Omicron variant has given scientists an unsettling answer: repeatedly, sometimes within months.
The meeting was meant to reinvigorate the response as vaccination and testing lag. Many attendees said Covid fatigue had become nearly as big a danger as Covid itself.
Antibody levels rose in the children who received it, suggesting the vaccine protects against infection. But the data were gathered before the arrival of Omicron.
Activists are also pressing President Biden to take a more forceful leadership role in the response as he convenes world leaders for a Covid-19 summit on Thursday.
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His company, Emergent BioSolutions, won a lucrative contract to produce Covid vaccines but then had to throw out millions of contaminated doses.
Both Moderna and Pfizer-BioNTech have asked the agency to approve their vaccines for children under 5.
But prior infection does not guarantee protection from the virus, officials said, and Americans should still get vaccinated and boosted.