According to the Epidemiology National Centre, between 1% and 5% of the population over 65 and 30% of the over 80 suffer from dementia. These figures mean over 20.000 cases within the city of Milan only. Alzheimer is responsible for over 50% of all such cases. It has been estimated that in Europe by 2030 there will be over 65 million people suffering from Alzheimer.

The pandemic caused by Covid-19 is generating an unprecedented situation in recent history, with several million infected and hundreds of thousands of deaths across the globe. This study aims at analyzing the efficacy and safety of hyperimmune serum for patients with moderate to severe Covid-19 disease.