26 November, 2012

For co-infections by strains of the same species, increased co-transmission selects for less virulent strains. This is because co-transmission aligns the interests of co-infecting strains, thus decreasing the selective pressure for increased within-host competitiveness.

PARASITE CO-TRANSMISSION AND THE EVOLUTIONARY EPIDEMIOLOGY OF VIRULENCE - Alizon - 2012 - Evolution - Wiley Online Library