Some observers expect the virulence of the opposition to gay marriage to cool accordingly after the UMP leadership convention.
And, if anything, it is all the more urgent as Islamic extremism appears to be increasing in size and virulence.
virulence vir·u·lence (vēr'yə-ləns, vēr'ə-)
The quality of being poisonous.
The capacity of a microorganism to cause disease.