Welcome to HCM.
Coxsackie virus is known to cause a condition called post viral fatigue syndrome which is characterized by generalized weakness, depression and sleepiness. I doubt he is suffering from this.
Beriglobin injections are immunoglobulins
which provide passive immunity
against diseases. These injections do not have many side effects except they cause allergic reaction
in some patients.
I suggest you get your husband examined by a psychiatrist
to rule out any depression or eating disorder.