A new study published in the journal Clinical Infectious Diseases provide compelling new evidence to support the phenomenon known as 'antigenic imprinting' which suggests that early exposure to one of the two flu strains that circulate every year imprints itself on our immunity and disproportionately affects the body's lifelong response to the flu. People's prior immunity to viruses like flu or even coronavirus can have a tremendous impact on their risk of becoming ill during subsequent epidemics and pandemics said study researcher Matthew Miller from McMaster University in Canada. Understanding how their prior immunity either leaves them protected or susceptible