Scientists, including those from Hokkaido University, modelled available data from Japan, Spain and Italy to show that susceptibility to COVID-19 is independent of age.
"The possibility of reinfections could have significant implications for our understanding of Covid-19 immunity, especially in the absence of an effective vaccine."
The study, published in the journal Mammal Review, noted that if SARS-CoV-2 were to infect and spread among wild mammals, it could potentially cause disease in some populations, in turn further endangering already threatened species.
The study, published in the Journal of Clinical Investigation, however, also demonstrated that the immunity built up from previous non-SARS-CoV-2 coronavirus infections does not prevent individuals from getting Covid-19.
