T'Pol is infected with a stigmatized disease, one only transmitted through contraversial mind melds.
2-21: The Breach
In the midst of a military coup, Enterprise hurries to rescue a team of Denobulan scientists before they're captured.
2-05: A Night in Sickbay
When a deadly virus infects Porthos, Archer spends an interesting night in sickbay.
Archer is captured by a bounty hunter intent on delivering him to the Klingons. Meanwhile, T'Pol experiences the symptoms of pon farr.