The ITALY researchers detected Covid-19 antibodies can exist in human blood infected at least 8 months.

"Antibodies against NCOV are present in the patient's blood that has made Covid-19 during this time regardless of how serious illnesses, how old or other patients with other pathologists", San Raffaele Hospital

The study was conducted by San Raffaele Hospital Scientists with the ITALY Senior Health Institute with 162 Patients with Covid-19 with symptoms and hospitalization at the hospital's emergency department in 2020

Doctor of San Raffaele Hospital, Milan, treatment of Covid-19 patients in emergency recovery room in March 2020.

The number of first blood samples was collected from the patient in March and April 2020.

The group of patients studied with two-thirds of men and the average age is 63. About 57% of patients carry the background before infection of NCOV such as diabetes and high blood pressure.

"The presence of antibodies is very clearly maintained for 8 months after diagnosis, although antibodies decrease over time. There are 3 patients no longer giving positive results when antibody tests", houses

The results have been published in the Journal of Nature Communications Science.

"Patients who do not develop antibodies in the first 15 days after virus infection are at a more serious Covid-19 complications", the report is noted.