Article 1
"Both men were not particularly susceptible to viral infections, such as influenza"
Overactive immune system.
"Indeed, flulike syndromes have been described as side effects of the medical use of cytokines (Vial and Descotes, 1995a, 1995b). Involvement of an immediate-type immune response, clinically represented by urticaria, can be excluded by the unresponsiveness of symptoms to antihistamines."
Mast cells release foremost cytokines/chemokines, these are more frequently involved than histamine.
"However, oxytocine has been suggested to negatively interfere with cognition (Geenen et al., 1988)."