small round viruses
small round virusesA heterogeneous group of poorly-characterized small viruses of about 25–35 mn in diameter. They are divided into small round structured viruses (SRSV) and small round non-structured viruses. They include the Norwalk agent and are known to be responsible for many cases of food poisoning and gastroenteritis.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005