“…While COVID-19 disease can affect subjects of any age, the majority of patients who suffer from severe disease including long-lasting syndromes (such as "Long COVID") and experience high case fatality are older adults. (Onder et al, 2020) Moreover, several consequences of long COVID syndrome in older people are still not known (Reid et al, 2021). Therefore, in almost every country across the world, the first population that was vaccinated against COVID-19 were older adults and, in particular, the most vulnerable and frail, such as nursing home residents (Dooling et al, 2020).…”