With reference to my previous post:
FROM AUSTRALIA TO THE UK - A WARNING.
Nor does this mention anything of the cost in human terms. The night before the WYD Mass tens of thousands of young pilgrims slept outdoors at a local racecourse, from which the condom vending machines had been removed.
A doctor friend who was present as part of a public health team still gets angry when describing what he saw that night, and the next morning he and the other medics were inundated with frantic young women in desperate need of support and the morning-after pill. He's currently undertaking research into a post WYD rise in chlamydia, and battling government officials who don't want the data made public.