Article History
Received: 1 October 2020
Accepted: 2 December 2020
First Online: 25 January 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.
: All applicable international, national, and/or institutional guidelines for the care and use of animal were followed. All procedures performed in studies involving human participant were in accordance with the ethical standards of the institutional and/or national ethic committee. A written informed consent was obtained from patients at the time of hospitalization. The Istituto Zooprofilattico Sperimentale of Sardinia was authorized by the ethics committee of the Local Health Authority of Sassari (Comitato di Bioetica, ASL N. 1, Sassari) Prot N. 1136, to analyze human sera following the request of the National Health Service doctors, since 03/26/2013.