Antibody levels fell to low or near zero within the first few months of getting the vaccine, unless the person had previously received a smallpox vaccine, scientists reported Saturday at the European Congress of Clinical Microbiology and Infectious Diseases in Barcelona.
Experts worry a recent rise in long COVID cases — fueled by a spike in winter holiday infections and a decline in masking and other measures — could continue into this year.
People born recently in England and Wales can expect to spend fewer years of their life in good health than those born over a decade ago, official figures show.
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.
The Covid pandemic marked the first time people armed with powerful scientific tools could study how the immune system awakens to and develops defenses against a new threat, in real time, in the global population.
The FDA said in an email to CNN on Wednesday that it “has chosen to resolve this lawsuit rather than continuing to litigate over statements that are between two and nearly four years old.”
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