Symptomatic therapy (analgesics/pain relievers or anti-inflammatories/anti-inflammatory drugs (non-steroidal anti-inflammatory drugs (NSAIDs), anti-emetics/anti-nausea and anti-nausea drugs), as appropriate).
Antivirals (are currently being tested).
Gamma globulin preparations (preferably from convalescent sera/blood serum used for passive immunization and derived from people who have just survived a specific infectious disease and whose blood thus has a high content of specific antibodies).