Adults with flu history have higher H5N1 antibodies

New research shows that adults with past flu infections are more likely to have antibodies against the H5N1 bird flu virus. Older adults exposed to seasonal flu strains before 1968 had higher levels of these antibodies compared to younger individuals. The study indicates that younger children, who have not been exposed to seasonal flu, have lower levels of H5N1-fighting antibodies. Vaccination with H5N1 vaccines has shown higher antibody responses in younger children, suggesting they may benefit more from such vaccines. H5N1 has been spreading among mammals, raising concerns about potential human transmission. Researchers emphasize that while all age groups could be affected in a pandemic, children may face the highest risk and should be prioritized for vaccination.