Hello user ,
yes mono , Infectious mononucleosis
or kissing disease is infectious but 90% of the population were exposed to EBV virus which is related to developing the disease so no need to worry from where or how might your boy friend got the virus . there is a test called mono spot used to determine mono positivity if he ends to be positive it will subsidize without treatment only some painkiller would be described symptoms are fever
, enlarged lymph
nodes , sore throat
, and fatigue
among others less common symptoms .
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best regards ,